Provide an appropriate response.The life (in hours) of light bulbs of a certain brand is normally distributed with mean 1200 and standard deviation 100. What percentage of such bulbs will burn more than 1250 hours?
A. 20.47
B. 41.73
C. 30.85
D. 48.26
E. 13.62
Answer: C
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Find the surface area or volume.Use an integral table and a calculator to find to two decimal places the area of the surface generated by revolving the curve 
about the x-axis.
A. 30.48 B. 24.84 C. 34.93 D. 42.69
Answer the question.How would you express the product of two numbers, r and s?
Fill in the blank(s) with the appropriate word(s).
Use the real estate amortization table to find the monthly payment for the loan.
What is the monthly payment on a 25-year loan of $101,300 if the annual interest rate is 
%?
A. $716.19 B. $708.09 C. $748.61 D. $816.48
Solve the problem.Maximize Q = xy2, where x and y are positive numbers, such that x + y2 = 10.
A. x = 0, y = 
B. x = 5, y = 
C. x = 
, y = 5
D. x = 1, y = 3