Solve the problem.For some reason the quality of production decreases as the year progresses at a light bulb manufacturing plant. The following data represent the percentage of defective light bulbs produced at a light bulb manufacturing plant in the corresponding month of the year. 
Use the equation of the least squares line to predict in which month the percentage of defective light bulbs would be 1.83%.
A. May
B. April
C. March
D. February
Answer: B
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Provide an appropriate response.At a certain mall in Ohio, the sales tax is 7%. If the total receipt for a food processor was $160.50, what was the price of the food processor?
Fill in the blank(s) with the appropriate word(s).
Solve the problem.A stone is thrown into a pond. A circular ripple is spreading over the pond in such a way that the radius is increasing at the rate of 2.3 feet per second. Find a function, r(t), for the radius in terms of t. Find a function, A(r), for the area of the ripple in terms of r. 
A. (A ? r)(t) = 5.29?t2 B. (A ? r)(t) = 4.6?t2 C. (A ? r)(t) = 2.3?t2 D. (A ? r)(t) = 5.29?2t
Add.-9 + (-4)
A. 13 B. -13 C. -5 D. 5
Identify the intervals where the function is changing as requested.Decreasing
A. (2, 1) B. (2, -1) C. (-1, 2) D. (1, 2)