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WGU Applied-Algebra Exam Syllabus Topics:

WGU Applied Algebra FXO2 PFXP C957 Sample Questions:

Question 1

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)=17n
C. f(n)=n/17
D. f(n)=n+17

Question 2

The scatterplot shows data on the population of rabbits in a nature preserve. The graphed regression function has an r^2value of 0.94.

What is the appropriate range of x-values for extrapolation?

A. Extrapolation is not appropriate because r^2 > 0.7.
B. Extrapolation is not appropriate because r^2 < 1.
C. x=-4to x=28
D. x=0to x=24

Question 3

The scatterplot shows data on the number of visitors to a resort each week since opening. A regression function is graphed with r^2=0.99. The predicted number of visitors after 16.4weeks is 38.6.

Is this prediction appropriate?

A. No. The r^2value indicates a strong fit, but x=16.4is more than 50%of the range beyond the maximum value.
B. Yes. The r^2value indicates a moderate fit, and x=16.4is within 25%of the range of the maximum value.
C. Yes. The r^2value indicates a strong fit, and x=16.4is within 50%of the range of the maximum value.
D. No. The r^2value indicates a moderate fit, but x=16.4is more than 25%of the range beyond the maximum value.

Question 4

As sacks are unloaded off a wagon, the total weight of the wagon and sacks changes. Each sack has the same weight. After 3 sacks are removed, the total weight of the cart and remaining sacks is 116 pounds. After 6 sacks are removed, the total weight is 101 pounds.
What is the weight of each sack?

A. 81 pounds
B. 5 pounds
C. 18 pounds
D. 32 pounds

Question 5

A researcher collected data on the number of daily posts on a blog. The results are shown in the scatterplot.
The graphed regression function has an r
2
value of 0.89.

Is it appropriate to make a prediction for the number of daily posts after 18.6 months?

A. Yes. The r2value indicates a moderate fit, and x=18.6 is within 25% of the range of the maximum value.
B. No. The r2value indicates a moderate fit, but x=18.6 is more than 25% of the range beyond the maximum value.
C. Yes. The r2value indicates a strong fit, and x=18.6 is within 50% of the range of the maximum value.
D. No. The r2value indicates a strong fit, but x=18.6 is more than 50% of the range beyond the maximum value.

Solutions: