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 5 hours. 
A. 77.7
B. 67.7
C. 72.7
D. 74.8
Answer: C
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When a car makes an emergency stop on dry pavement, it leaves skid marks on the pavement. The length L, in feet, of the skid marks is related to the speed S, in miles per hour, when the brakes were applied. The relationship is
.
A: Make a graph of S against L for skid mark lengths up to 200 feet.B: A man involved in an emergency stop claimed his speed was between 30 and 40 miles per hour. Add the horizontal lines represented by
and 
to the graph you made in part A.C: What range of skid mark length would support the driver's claim? Round your answer to two decimal places/
What will be an ideal response?
Find the y-intercept of: -4x²+8x-3
What will be an ideal response?
Write as a decimal.- 
A. -0.32
B. -0.33
C. -0.3
D. -0.325
Multiply.(33)(22)
A. 736 B. 726 C. 826 D. 716