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| Section | Objectives |
|---|---|
| Topic 1: Functions and Algebra of Functions | - Derive conclusions based on data - Derive conclusions based on notation - Derive conclusions based on graphs |
| Topic 2: Graphical Depictions | - Interpret rates of change for situations - Interpret concavity for situations - Interpret maximum and minimum for situations - Interpret inputs and outputs for situations - Interpret asymptotes for situations |
| Topic 3: Polynomial Functions | - Interpret inputs and outputs for polynomial functions - Interpret rates of change for polynomial functions - Interpret concavity for polynomial functions |
| Topic 4: Validity of Models | - Determine validity - Examine utility - Determine fit |
| Topic 5: Linear Functions | - Interpret rates of change for linear functions - Interpret inputs and outputs of linear functions |
| Topic 6: Logistic Functions | - Interpret rates of change for logistic functions - Interpret inputs and outputs for logistic functions - Interpret asymptotes for logistic functions |
| Topic 7: Exponential Functions | - Interpret rates of change for exponential functions - Interpret concavity for exponential functions - Interpret inputs and outputs for exponential functions |
現在、多くの外資系会社はWGUのApplied-Algebra試験認定を持つ職員に奨励を与えます。それに、Applied-Algebra試験に合格しない人々は大変なことであるでしょうか？我々のWGUのApplied-Algebra問題集は試験に準備する受験生にヘルプを与えます。もしあなたはWGUのApplied-Algebra試験に準備しているなら、弊社Xhs1991のApplied-Algebra問題集を使ってください。
質問 # 82
A new company just launched and is using the function M(t)to predict its market share after tyears. The graph of M(t)is shown.
When should the company expect to have a market share of 40%?
正解：A
解説：
The function M(t)represents the company's market share after tyears.
The horizontal axis represents:
t= " time in years "
The vertical axis represents:
M(t)= " market share percentage "
We need to find when the market share reaches:
40%
From the graph, locate 40on the vertical axis. Then move horizontally to the blue curve and read the corresponding value on the horizontal axis.
The curve reaches 40%at approximately:
t=7.4
So the company should expect to have a market share of 40%after about:
7.4 " years "
Therefore, the correct answer is:
# ( " C " )
質問 # 83
The temperature of an object changes according to the relationship in the graph.
What is the equation of the horizontal asymptote?
正解：A
解説：
The graph shows the temperature of an object decreasing over time.
The horizontal axis represents:
" Time in minutes "
The vertical axis represents:
" Temperature in degrees Fahrenheit "
The curve decreases and approaches the horizontal axis as time increases.
A horizontal asymptote is a horizontal line that the graph approaches but may not reach. Horizontal lines have equations of the form:
y= " constant "
From the graph, the curve approaches:
y=0
So the horizontal asymptote is:
y=0
The options x=0and x=500are vertical lines, not horizontal asymptotes.
Therefore, the correct answer is:
# ( " B " )
質問 # 84
Consider the graph of x(t) shown. The function represents the number of users, x, watching a live video t hours after 9:00 a.m.
Which interval represents a range of values for which the number of users is decreasing slower and slower?
正解：D
解説：
To describe "decreasing slower and slower," the graph must be moving downward while becoming less steep.
This means the function values are decreasing, but the rate of decrease is becoming smaller in magnitude. On the graph of x(t), the number of users first increases, then decreases after reaching a local maximum. The interval from t=6.8 to t=7.4 lies on a decreasing part of the curve where the graph is beginning to flatten compared with the steeper earlier decrease. That behavior means the number of users is still going down, but not as quickly as before. The other intervals either occur while the graph is increasing or include behavior that does not consistently match decreasing slower and slower. Therefore, the correct answer is C.
質問 # 85
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?
正解：D
解説：
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 " )
質問 # 86
The function a(x)represents the value of an investment account, where xis the number of years since the account was opened. The graph of the function is shown.
What is the total value when x=4?
正解：A
解説：
The function a(x)represents the total value of an investment account.
The horizontal axis represents:
x= " time in years "
The vertical axis represents:
a(x)= " total account value in dollars "
We are asked to find the total value when:
x=4
To answer this from the graph:
Locate x=4on the horizontal axis.
Move vertically upward until reaching the blue graph.
Read the corresponding value on the vertical axis.
From the graph, when x=4, the value is slightly above $1,800, approximately:
a(4)#1,830.59
So the total value of the investment account after 4 years is approximately:
$1,830.59
質問 # 87
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WGU Applied-Algebra試験参考書を利用すれば、あなたは多くの時間を節約するだけでなく、いろいろな知識を身につけます。最も重要なのは、Applied-Algebra認定試験資格証明書を取得できるということです。また、Applied-Algebra試験参考書の合格率は高いので、Applied-Algebra試験に落ちる必要がないです。
Applied-Algebra試験問題解説集: https://www.xhs1991.com/Applied-Algebra.html