Simplify.2(x + 2y - z) - 2(2x - y + 3z)
A. -2x + 2y - 8z
B. 6x + 6y - 8z
C. -2x + 6y + 8z
D. -2x + 6y - 8z
Answer: D
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Express the given number in exponential form.7 - j
A. 7.07e6.14j B. 7.07e-0.142j C. 7.07e-1.43j D. 7.07e4.85j
Determine the amplitude and range of the function and sketch its graph.y = -3 sin 
x
A. amplitude: 3; range: [0, 3]
B. amplitude: 3; range: [-3, 3]
C. amplitude: 3; range: [-3, 3]
D. amplitude: 
; range: (-?, ?)
Solve.A board of length 
inches was cut into two pieces. If one piece is 
inches, express the length of the other board as a rational expression.
A. 
in.
B. 
in.
C. 
in.
D. 
in.
Solve the problem.The second angle of a triangle is 3 times as large as the first. The third angle is 70° more than the first. Find the measure of the smallest angle.
A. 110° B. 70° C. 22° D. 20°