If f is one-to-one, find an equation for its inverse.f(x) = (x - 9)2
A. Not a one-to-one function
B. f-1(x) = 
C. f-1(x) = 
+ 9
D. f-1(x) = 
Answer: A
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Solve the problem.A piece of cable which is 
m long is to be cut into pieces 
m long. How many pieces will there be?
A. 50 pieces
B. 4 pieces
C. 
piece
D. 20 pieces
Solve the problem.The minute hand of a clock is 8 inches long. How far does the tip of the minute hand move in 40 minutes? If necessary, round the answer to two decimal places.
A. 33.51 in. B. 36.02 in. C. 31.77 in. D. 34.74 in.
Find the unit vector having the same direction as v.v = 12i + 5j
A. u = - 
i - 
j
B. u = 
i + 
j
C. u = 
i + 
j
D. u = 156i + 65j
Use a calculator to find an approximate solution to the equation. Round your answer to the nearest thousandth.2n2 = -6n - 3
A. {0.436, -3.436} B. {-0.317, -1.183} C. {-2.134, -3.866} D. {-0.634, -2.366}