Applied-Algebra완벽한시험기출자료최신기출문제공부하기

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WGU Applied-Algebra Exam Syllabus Topics:

Section	Objectives
Topic 1: Graphical Depictions	- Interpret asymptotes for situations - Interpret maximum and minimum for situations - Interpret inputs and outputs for situations - Interpret concavity for situations - Interpret rates of change for situations
Topic 2: Validity of Models	- Determine validity - Examine utility - Determine fit
Topic 3: Functions and Algebra of Functions	- Derive conclusions based on graphs - Derive conclusions based on data - Derive conclusions based on notation
Topic 4: Polynomial Functions	- Interpret rates of change for polynomial functions - Interpret concavity for polynomial functions - Interpret inputs and outputs for polynomial functions
Topic 5: Linear Functions	- Interpret inputs and outputs of linear functions - Interpret rates of change for linear functions
Topic 6: Logistic Functions	- Interpret asymptotes for logistic functions - Interpret inputs and outputs for logistic functions - Interpret rates of change for logistic functions
Topic 7: Exponential Functions	- Interpret inputs and outputs for exponential functions - Interpret rates of change for exponential functions - Interpret concavity for exponential functions

>> Applied-Algebra완벽한 시험기출자료 <<

Applied-Algebra인기공부자료 & Applied-Algebra자격증공부

WGU Applied-Algebra 인증시험은 최근 가장 핫한 시험입니다. 인기가 높은 만큼WGU Applied-Algebra시험을 패스하여 취득하게 되는 자격증의 가치가 높습니다. 이렇게 좋은 자격증을 취득하는데 있어서의 필수과목인WGU Applied-Algebra시험을 어떻게 하면 한번에 패스할수 있을가요? 그 비결은 바로Itcertkr의 WGU Applied-Algebra덤프를 주문하여 가장 빠른 시일내에 덤프를 마스터하여 시험을 패스하는것입니다.

최신 Courses and Certificates Applied-Algebra 무료샘플문제 (Q127-Q132):

질문 # 127
The function f(n) represents the relationship between the distances traveled by two vehicles, where n is the distance traveled by vehicle A and f is the distance traveled by vehicle B. The distance traveled by vehicle B is 17 more than the distance traveled by vehicle A.
Which function represents this situation?

A. f(n)=n+17
B. f(n)=n#17
C. f(n)=17n
D. f(n)=n/17

정답：A

설명：
The function f(n) gives the distance traveled by vehicle B.
The input n represents the distance traveled by vehicle A.
The problem says vehicle B travels 17 more than vehicle A. The phrase "17 more than" means we add 17 to the amount traveled by vehicle A.
So the relationship is:
f(n)=n+17
For example, if vehicle A traveled 50 miles, then vehicle B traveled:
f(50)=50+17=67
So the correct function is:
f(n)=n+17
Therefore, the correct answer is:
B

질문 # 128
The graph shows the weekly profit in hundreds of dollars for a coffee shop. The horizontal axis represents the number of years since the coffee shop opened.

What is the correct interpretation of the minimum value?

A. Approximately 13 years after opening, a minimum weekly profit of approximately $990was earned.
B. Approximately 13 years after opening, a minimum weekly profit of approximately $4,630was earned.
C. Approximately 6 years after opening, a minimum weekly profit of approximately $990was earned.
D. Approximately 6 years after opening, a minimum weekly profit of approximately $4,630was earned.

정답：C

설명：
The graph shows weekly profit as a function of time.
The horizontal axis represents:
" years since opening "
The vertical axis represents:
" weekly profit in hundreds of dollars "
The graph is an upward-opening curve, so its minimum value occurs at the lowest point, called the vertex.
From the graph, the lowest point occurs at approximately:
t=6
So the minimum weekly profit happened approximately:
6 " years after opening "
The vertical value at this point is approximately:
9.9
Since the profit is measured in hundreds of dollars:
9.9×100=990
So the minimum weekly profit was approximately:
$990
Therefore, the correct answer is:
# ( " A " )

질문 # 129
The data in the scatterplot represents the number of people working at a research station over time. The graphed regression function has an r
2
value of 0.96. The predicted number of people working at the research station after 18.1 years is 541.

Is this prediction appropriate?

A. No. The r2value indicates a strong fit, but x=18.1 is more than 50% of the range beyond the maximum value.
B. No. The r2value indicates a moderate fit, but x=18.1 is more than 25% of the range beyond the maximum value.
C. Yes. The r2value indicates a moderate fit, and x=18.1 is within 25% of the range of the maximum value.
D. Yes. The r2value indicates a strong fit, and x=18.1 is within 50% of the range of the maximum value.

정답：A

설명：
The value r2=0.96 indicates a strong regression fit because it is very close to 1. A strong fit supports prediction better than a weak or moderate fit. However, prediction also depends on whether the x-value is within a reasonable extrapolation range. The prediction is made at x=18.1, which is beyond the maximum observed x-value in the scatterplot. Even though the model fits the data well, the prediction is too far beyond the observed data range.
For a strong model, extrapolation should not go more than about 50% of the range beyond the maximum value. Since x=18.1 exceeds that limit, the prediction is not appropriate. Therefore, the correct answer is B.

질문 # 130
After a water tank starts leaking, the amount of water in the tank is modeled by the exponential function that is graphed.

Which statement is justified considering the location of the horizontal asymptote?

A. The water volume will change by a constant rate over time.
B. The greatest water volume occurs after 11 minutes.
C. The water volume will not decrease to 500 gallons.
D. The rate of change in water volume quickens over time.

정답：C

설명：
The graph shows the water volume decreasing over time.
The vertical axis represents:
" Water volume in gallons "
The horizontal axis represents:
" Time in minutes "
The graph is an exponential decay curve. It decreases quickly at first, then levels off.
From the graph, the curve approaches a horizontal value near:
y=1,000
This means the horizontal asymptote is approximately:
y=1,000
Since the graph approaches 1,000 gallons, it will not decrease to 500 gallons according to this model.
The water volume does not change by a constant rate because exponential functions do not have constant additive change. Also, the graph decreases fastest at the beginning, not later.

질문 # 131
A recipe calls for a constant ratio of water and lemon juice. The graph shows the relationship between the amounts of these two ingredients, where wis the volume of water and lis the volume of lemon juice.

What is the correct interpretation of the rate of change?

A. The amount of lemon juice must be the amount of water plus 8/5.
B. The amount of lemon juice must be the amount of water plus 5/8.
C. The amount of lemon juice must be 8/5of the amount of water.
D. The amount of lemon juice must be 5/8of the amount of water.

정답：D

설명：
The graph shows a linear relationship between:
w= " water in cups "
and
l= " lemon juice in cups "
The line passes through the origin, so the relationship has the form:
l=mw
where mis the rate of change.
From the graph, a clear point on the line is approximately:
(8#5)
This means when there are 8 cups of water, there are 5 cups of lemon juice.
The rate of change is:
m= " change in lemon juice " / " change in water "
m=5/8
So the relationship is:
l=5/8 w
This means the amount of lemon juice must be:
5/8
of the amount of water.

질문 # 132
......

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