Solve and check. Identify any extraneous solutions.
= 
A. - 7, (3 is extraneous)
B. - 7, -3
C. - 7, 3
D. - 7, (-3 is extraneous)
Answer: D
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Use an annual percentage rate table to solve the problem.In order to make some home improvements, a home owner spent $20,000. He paid 15% as a down payment and financed the balance of the purchase with a 
fixed installment loan with an APR of 
Determine the home owner's total finance charge and monthly payment.
A. Total finance charge = $2562.00; Monthly payment = $626.72 B. Total finance charge = $1006.40; Monthly payment = $500.18 C. Total finance charge = $1205.30; Monthly payment = $505.70 D. Total finance charge = $2920.60; Monthly payment = $553.35
Refer to the double-bar graph below which shows the number of male (M) and female (F) athletes at a university over a four-year period. Solve the problem. 
YEARHow many more male athletes than female athletes were there in 1987?
A. 150 B. 0 C. 100 D. 50
Find the derivative of y.y = sinh2 7x
A. 2 cosh 7x B. 14 cosh 7x C. 14 sinh 7x cosh 7x D. 2 sinh 7x cosh 7x
Use the horizontal line test to determine whether the function is one-to-one.
A. Yes B. No