Use Cramer's rule to solve the system. x + y + z - w = 6 2x - y + 3z + 4w = -4 4x + 2y - z - w = -13 -x - 2y + 4z + 3w = 12
A. 
B. 
C. Can't use Cramer's rule, D = 0
D. 
Answer: A
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Solve the problem. Use the approximate APR formula to estimate the APR, and round rates to the nearest tenth of a percent.Doris White decided to get new appliances for her kitchen at a cost of $5900. She puts $700 down and will pay $137.75 per month for 48 months. Find the total installment cost, the finance charge, and the approximate annual percentage rate.
A. Total: $6912.00 Finance Charge: $1012.00 APR: 9.7% B. Total: $7312.00 Finance Charge: $2112.00 APR: 19.9% C. Total: $7312.00 Finance Charge: $1412.00 APR: 13.3% D. Total: $6612.00 Finance Charge: $712.00 APR: 5.9%
Find the requested function value for the given function. Round the answer to the nearest tenth when necessary.If f(x) = 
, find the value of f(4).
A. 18 B. 16 C. 4 D. 4.5
Match the given equation with one of the graphs.(x + 5)2 = 2(y - 6)
A. 
B. 
C. 
D. 
Find the standard form of the equation of the hyperbola with the given characteristics.
vertices: (0, ±4) foci: (0, ±8)
a. 
b. 
c. 
d. 
e. 