Perform the indicated operation. Simplify your answers. 
A. 3
B. 4
C. 4
D. 10
Answer: A
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Solve the problem.A long strip of sheet metal 12 inches wide is to be made into a small trough by turning up two sides at right angles to the base. If the trough is to have maximum capacity, how many inches should be turned up on each side?
A. 6 in. B. 3 in. C. 5 in. D. 4 in.
Provide an appropriate response.Solve: 
= 7
A. x = 3, x = -4 B. x = 3, x = 4 C. x = 3, x = -3 D. x = 4, x = -4
Match the given function to its graph.1) y = sin(3x)2) y = 3 cos x3) y = 3 sin x4) y = cos(3x)AB
?
CD
?
A. 1A, 2B, 3C, 4D B. 1A, 2C, 3D, 4B C. 1B, 2D, 3C, 4A D. 1A, 2D, 3C, 4B
Solve the system of equations (only real solutions) by the elimination method. Check your solutions.
A. {(-4, 0), (-4, 4)} B. {(4, 0), (-4, 0)} C. {(4, 4), (-4, 4)} D. {(4, 0), (4, 4)}