Solve the equation. Round any irrational solutions to the nearest thousandth.4x2 + 7x + 1 = 0
A. 2.872, -2.872
B. 1.255, 12.745
C. -0.157, -1.593
D. 0.157, 1.593
Answer: C
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Find the limit of the sequence or determine that the limit does not exist.an = 
n
A. e B. does not exist C. e5 D. 1
Solve the problem.The approximate annual interest rate for a consumer loan paid off with monthly payments is given by the algebraic expression 
, where f is the finance charge on the loan, p is the number of payments, and b is the original amount of the loan. Find the approximate annual interest rate for an automobile loan to be repaid in 24 monthly installments if the finance charge on the loan is $528 and the original loan balance is $3780.(Round your answer to two decimal places, if necessary.)
A. 13.96% B. 12.24% C. 14.58% D. 13.41%
Solve the problem.Find parametric equations for an object that moves along the ellipse 
+ 
= 1 with the motion described.The motion begins at (0, 2), is clockwise, and requires 4 seconds for a complete revolution.
A. x = 2 cos (
?t), y = 2 sin (
?t), 0 ? t ? 4
B. x = 2 sin (
?t), y = 2 cos (
?t), 0 ? t ? 4
C. x = 2 sin (4?t), y = 2 cos (4?t), 0 ? t ? 4
D. x = 2 sin (
?t), y = -2 cos (
?t), 0 ? t ? 4
Solve the problem.The revenue achieved by selling x graphing calculators is figured to be 
dollars. The cost of each calculator is 
How many graphing calculators must be sold to make a profit (revenue - cost) of at least $67.50?
A. {x ? 11 < x < 13} B. {x ? 12 < x < 18} C. {x ? 10 < x < 14} D. {x ? 9 < x < 15}