更新するApplied-Algebra合格資料試験-試験の準備方法-正確的なApplied-Algebra専門知識訓練

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WGU Applied-Algebra Exam Syllabus Topics:

>> Applied-Algebra合格資料 <<

実際的Applied-Algebra｜素晴らしいApplied-Algebra合格資料試験｜試験の準備方法WGU Applied Algebra FXO2 PFXP C957専門知識訓練

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WGU Applied Algebra FXO2 PFXP C957 認定 Applied-Algebra 試験問題 (Q87-Q92):

質問 # 87
The population of fish in a lake is changing according to the function
P(t)=24t+185
where tis the number of months since the beginning of the year and P(t)is the fish population at time t.
Which interpretation of the rate of change is correct?

• A. The number of fish in the lake is increasing at a constant rate of 185 fish per month.
• B. The number of fish in the lake is decreasing at a constant rate of 185 fish per month.
• C. The number of fish in the lake is decreasing at a constant rate of 24 fish per month.
• D. The number of fish in the lake is increasing at a constant rate of 24 fish per month.

正解：D

質問 # 88
The graph shows the number of customers, C(t), showing up to a store, where the number of hours since opening is along the horizontal axis and the number of customers showing up to the store each hour is along the vertical axis.

How can the concavity be described from t=6.2to t=10.1?

• A. The number of customers increases slower and slower and then increases faster and faster.
• B. The number of customers increases faster and faster and then increases slower and slower.
• C. The number of customers decreases slower and slower and then increases faster and faster.
• D. The number of customers increases slower and slower and then decreases faster and faster.

正解：D

解説：
From t=6.2to about t=8.5, the graph is increasing, but it is becoming less steep as it approaches a local maximum.
That means the number of customers is:
" increasing slower and slower "
After the local maximum, from about t=8.5to t=10.1, the graph begins to decrease and becomes steeper downward.
That means the number of customers is:
" decreasing faster and faster "
So the full description is:
" The number of customers increases slower and slower and then decreases faster and faster. " Therefore, the correct answer is:
# ( " D " )

質問 # 89
The data in the scatterplot represents the number of monthly train crossings at a particular intersection over time.

Which type of function should be used to model the data?

• A. Linear
• B. Polynomial
• C. Exponential
• D. Logistic

正解：C

解説：
The scatterplot shows a decreasing pattern.
At first, the number of monthly crossings decreases quickly. Then the values begin to level off.
This type of pattern is characteristic of an exponential decay model.
A linear model would show points decreasing at a constant rate, forming an approximately straight line. Here, the decrease is not constant; it is steep at first and then slows down.
A logistic model usually has an S-shaped pattern, which is not shown here.
A polynomial model may curve, but the long-term leveling behavior shown in the scatterplot is best represented by an exponential decay function.
Therefore, the correct answer is:
# ( " D " )

質問 # 90
The value of a collectible artifact is represented by the function
f(x)=330× # 1.15 #