WGU C957 Exam Questions with Verified Answers (Correct Update)
Question 1: Exponential function
Answer: Ans-increasing concave up forever or decreasing concave forever; the concavity
never changes
Question 2: Logistic function
Answer: Ans-modeled by an S curve and a center inflection point; increases faster and faster
for the first half of the function and second half will trend downwards; will only change concavity
once
Question 3: Polynomial function
Answer: Ans-will always change direction to rising to falling and vice versa; the degree of
the function depends on the number of turns the data takes
Question 4: Linear function
Answer: Ans-will always form a straight line; concavity will never change; degree of 1
Question 5: What does a linear function model?
Answer: Ans-a constant rate of change
Question 6: What does a polynomial function model?
Answer: Ans-acceleration/deceleration
Question 7: What does an exponential function model?
Answer: Ans-A constant ratio change AND all percentage based
growth
Question 8: What does a logistic function model?
Answer: Ans-bounded growth and decline
Question 9: What is an example of a logistic function model subject?
Answer: Ans-Populations
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Question 1: Exponential function
Answer: Ans-increasing concave up forever or decreasing concave forever; the concavity
never changes
Question 2: Logistic function
Answer: Ans-modeled by an S curve and a center inflection point; increases faster and faster
for the first half of the function and second half will trend downwards; will only change concavity
once
Question 3: Polynomial function
Answer: Ans-will always change direction to rising to falling and vice versa; the degree of
the function depends on the number of turns the data takes
Question 4: Linear function
Answer: Ans-will always form a straight line; concavity will never change; degree of 1
Question 5: What does a linear function model?
Answer: Ans-a constant rate of change
Question 6: What does a polynomial function model?
Answer: Ans-acceleration/deceleration
Question 7: What does an exponential function model?
Answer: Ans-A constant ratio change AND all percentage based
growth
Question 8: What does a logistic function model?
Answer: Ans-bounded growth and decline
Question 9: What is an example of a logistic function model subject?
Answer: Ans-Populations
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