Find the absolute value of the complex number. Round your answer to two decimal places, if necessary.-9
A. 4.5
B. 81
C. 9
D. 3
Answer: C
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Simplify.
A. 
B. 
C. 3x + 5y
D. 5x + 3y
Find f-1(x) for the following one-to-one function f.f = {(-3, -3), (-2, -2), (-1, -1), (0, 0)}
A. f-1 = {(3, -3), (2, -2), (1, -1), (0, 0)} B. f-1 = {(3, 3), (2, 2), (1, 1), (0, 0)} C. f-1 = {(-3, -3), (-2, -2), (-1, -1), (0, 0)} D. f-1 = {(-3, 3), (-2, 2), (-1, 1), (0, 0)}
Solve the problem.Ohm's law relates the current in a circuit, I, in amperes, the voltage of the circuit, V, in volts, and the impedance of the circuit, Z, in ohms, by the formula 
Find V, the voltage of a circuit, if I = (9 + 8i) amperes and Z = (5 + 4i) ohms.
A. (13 - 76i) volts B. (76 + 13i) volts C. (13 + 76i) volts D. (76 - 13i) volts
If the following is a polynomial function, then state its degree and leading coefficient. If it is not, then state this fact.f(x) = 
A. Degree: 8; leading coefficient: 4 B. Degree: 2; leading coefficient: 4 C. Degree: 4; leading coefficient: 2 D. Not a polynomial function