Perform the indicated operation and write the answer in the form 
where a and b are real numbers.5i(2 - 8i)
A. 10i + 40i2
B. 10i - 40i2
C. 40 + 10i
D. 10i - 40
Answer: C
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Determine whether the relation is also a function.{(-8, -7), (-8, 9), (1, -6), (5, -4), (7, 5)}
A. yes B. no
The graph of the function f is shown below. Match the function g with the correct graph.g(x) = f(x + 2)
A. 
B. 
C. 
D. 
Identify the base and the exponent for the exponential expression.(13x)15
A. Base: 13x, exponent: 15 B. Base: 15, exponent: 13x C. Base: x, exponent: 15 D. Base: 15, exponent: x
Solve the problem.A force of 4 pounds acts in the direction of 4° to the horizontal. The force moves an object along a straight line from the point (4, 8) to the point (19, 17), with distance measured in feet. Find the work done by the force. Round the answer to one decimal place, if necessary.
A. 95.8 ft-lb B. 17.5 ft-lb C. 70 ft-lb D. 69.8 ft-lb