The rectangular coordinates of a point are given. Find polar coordinates for the point.(100, -30) Round the polar coordinates to two decimal places, with ? in degrees.
A. (104.40, -106.70°)
B. (104.40, 16.70°)
C. (104.40, -16.70°)
D. (104.40, 106.70°)
Answer: C
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Solve the problem.Find the volume generated by revolving the curve y = cos 2x about the x-axis, 0 ? x ? ?/24
A. 
+ 
B. 
+ 
C. 
+ 
D. 
Write each whole number in expanded form.2070
A. 20,000 + 7000 B. 2000 + 70 C. 200 + 7 D. 207,000
Solve the problem.If Marco hired a plumber for 5 hours the total cost would be $170. If he hired the same plumber for 13 hours , the total cost would be $410. Assume a linear relationship between the cost, y, in dollars and the number of hours worked, x. Find an equation in slope-intercept form that models the relationship between the cost and the number of hours worked.
A. y = 30x + 20 B. y = 30x + 20x C. y = 35x + 20 D. y = 30x + 60
Determine whether the given function is one-to-one. If it is one-to-one, find its inverse.f(x) = 
A. f-1(x) = x3 - 8
B. f-1(x) = (x + 8)3
C. f-1(x) = (x - 8)3
D. f-1(x) = 
+ 8