Find the period of the function.y = cot(-3x)
A. 
B. 3?
C. 3
D. ?
Answer: A
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Solve the problem.Find the equation for the tangent plane to the surface 
at the point 
A. 2x + y - 11z = 1 B. 2x + y - 11z = -8 C. -8x - 6y - z = -11 D. -8x - 6y - z = -16
Find the product.9x2(-12x3 - 4x2)
A. -144x5 - 144x4 B. -144x2 C. -108x5 - 4x2 D. -108x5 - 36x4
Solve the right triangle shown in the figure. Round lengths to one decimal place and express angles to the nearest tenth of a degree. 
a = 10.6, c = 24.5
A. A = 25.6°, B = 25.6°, b = 22.1 B. A = 25.6°, B = 64.4°, b = 26.7 C. A = 66.6°, B = 23.4°, b = 26.7 D. A = 25.6°, B = 64.4°, b = 22.1
Solve the problem.If Gloria received a 3 percent raise and is now making $25,750 a year, what was her salary before the raise? Round to the nearest dollar if necessary.
A. $26,000 B. $25,000 C. $23,750 D. $24,978