Simplify. Assume that any variables are positive.
A. 
B. 
C. 
D. 
Answer: A
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Find the indicated matrix.Let A = [-1 2] and B = [1 0]. Find 3A + 4B.
A. [-3 4] B. [1 6] C. [-1 4] D. [2 2]
Solve the problem.A driver wants to gauge the fuel efficiency of her vehicle at speeds of 30 mph and above. She notices that traveling at an average speed of 45 mph results in a rating of 34 mpg, where as at an average speed of 60 mph, her car rates 29 mpg. Find an equation to model the gas mileage y for an average speed of x mph.
A. y = 3x + 49
B. y = - 
x - 19
C. y = 3x - 19
D. y = - 
x + 49
Solve the equation by completing the square.6x2 + 2x - 4 = 0
A. 
, -1
B. 
, 0
C. 
, -1
D. 
, 1
Use the given zero to find the remaining zeros of the function.f(x) = x3 + 2x2 - 6x + 8; zero: 1 + i
A. 1 - i, -4 B. 1 - i, 4i C. 1 - i, 4 D. -4, 4