Find a formula for the inverse of the function described below.An organization determines that the cost per person of chartering a bus is given by the formula 
where x is the number of people in the group and C(x) is in dollars.
A. C-1(x) = 
B. C-1(x) = 
C. C-1(x) = 
D. C-1(x) = 
Answer: C
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Sketch the graph of the parametric equations. Then set up the appropriate integral to find the length of the curve and use a computer to evaluate it.x = 2t cos t, y = 2t sin t, 0 ? t ? 3?
A. L = 20?
B. L = 61.51
C. L = 92.26
D. L = 61.51
Express the given function as a composite of functions f and g such that y = f(g(x)).y = 
A. f(x) = 
, g(x) = 8
B. f(x) = 
, g(x) = 8x + 8
C. f(x) = 
, g(x) = 8x + 8
D. f(x) = 8, g(x) = 
The two figures are congruent. Find the measure of the requested side or angle.?BCD
A. ?BCD = 225° B. ?BCD = 135° C. ?BCD = 211.5° D. ?BCD = 121.5°
Use a calculator to evaluate the expression, or state that the value does not exist. Round the answer to four decimal places when necessary.coth 3
A. 10.0677 B. 0.0993 C. 0.9951 D. 1.005