Solve.The following table gives the electricity usage (in kilowatt hours) for the Peters family for the first six months of this year.
What is the average electricity usage for the months January through April?
A. 965.451 kwh
B. 978.74 kwh
C. 973.76 kwh
D. 967.75 kwh
Answer: D
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Find the limit.
cot-1 x
A.
| 0? |
B. ?
C.
D. ?
Factor.3x2y7 + 9x2y6
A. 3x6y2(y + 3) B. x2y6(3y + 3) C. y + 3 D. 3x2y6(y + 3)
Solve the problem.Because of material shortages, it is increasingly expensive to produce 6.0L diesel engines. In fact, the profit in millions of dollars from producing x hundred thousand engines is approximated by 
where 
Find the point of diminishing returns.
A. (2.75, 106.26) B. (3.67, 16.63) C. (3.67, 62.26) D. (3.67, 106.26)
Solve.Looking ahead to retirement, you sign up for automatic savings in a fixed-income 401K plan that pays 6.5% per year compounded annually. You plan to invest $2500 at the end of each year for the next 10 years. How much will your account have in it at the end of 10 years?
A. $33,736 B. $35,506 C. $35,034 D. $32,193