Solve the problem. Round to two decimal places unless otherwise indicated.Suppose the cost per ton, y, to build an oil platform of x thousand tons is approximated by y = 
. What is the cost per ton for x = 20?
A. $3125.00
B. $3000.00
C. $431.03
D. $25.00
Answer: C
Mathematics
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Find the polar coordinates of the point(s) of intersection of the given curves for 
r = 12 cos ?, r = 
A. (12, ?), 
, 
B. (12, 0), 
, 
C. (-12, ?), 
, 
D. 
, 
, 
Mathematics
Plot and label the given points.(0, 6), (0, 4)
What will be an ideal response?
Mathematics
Write the inequality using interval notation, and illustrate the inequality using the real number line.t ? 6
A. (6, ?)
B. [6, ?]
C. (6, ?]
D. [6, ?)
Mathematics
Find the inverse using composition.f(x) = x4 + 4, x ? 0
A. f-1(x) = 
B. f-1(x) = 
C. f-1(x) = 
D. Not invertible
Mathematics