Perform the indicated operations. Leave the result in polar form.[3(cos 40° + j sin 40°)]4
A. 81(cos 404° + j sin 404°)
B. 7(cos 160° + j sin 160°)
C. 12(cos 160° + j sin 160°)
D. 81(cos 160° + j sin 160°)
Answer: D
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Graph the piecewise-defined function 
if 
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What will be an ideal response?
Find the domain and the range of the functions or relations from the graph.
A. domain: (-?, ?); range: (0, ?) B. domain: (-?, 0); range: (-?, 0) C. domain: (-?, ?); range: (-?, ?) D. domain: (0, ?); range: (0, ?)
Solve the equation by factoring.x(x - 9) + 18 = 0
A. {3, 6} B. {-3, -6} C. {3, -6} D. {-3, 6}
Solve the problem using the loan payoff table or an amortization table.
John Thomas bought a new car for $16,445. He paid 10% down and monthly payments for 3 years at 10%. Find the amount of each monthly payment necessary to amortize the loan and the total amount of interest paid over the 3 years.
A. $559.61, $5,345.46 B. $484.57, $2,644.02 C. $530.68, $2,659.48 D. $477.61, $2,393.46