Solve the problem.The length a spring is stretched from its natural length with work, W
is given by L = 
where k is a constant for the given spring. If a certain spring has a constant of 37.1, and the spring is to be stretched 4.2 feet from its natural length, how much work will be necessary? Round your answer to the nearest tenth.
A. 77.9 foot-pounds
B. 38 foot-pounds
C. 654.4 foot-pounds
D. 327.2 foot-pounds
Answer: D
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Reflect the figure about the indicated axis of reflection on the graph.Reflect the figure about the x-axis.
What will be an ideal response?
Solve the problem.The paired data below consist of the test scores of 6 randomly selected students and the number of hours they studied for the test. By using linear regression, the following function is obtained: 
where x is number of hours studied and y is score on the test. Use this function to predict the score on the test of a student who studies 11 hours. Round to the nearest tenth.
A. 83.8 B. 84.1 C. 74.1 D. 79.1
Solve the problem.The following numerical representation for f computes the average number of hours of television watched per day based on year of birth x.
Give a numerical representation for a function g that computes the average number of hours of television watched per day for the year x, where 
corresponds to the birth year 1975. Write an equation that shows the relationship between f(x) and g(x).
A. 
f(x) = g(x + 1975)
B. 
f(x) = g(x) - 1975
C. 
f(x) = g(x - 1975)
D. 
f(x) = g(x - 1900)
Evaluate, if possible-
A. -10 B. -50 C. 10 D. Not a real number