Solve the problem.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. Find a formula for the inverse of this function.
A. C-1(x) = 
B. C-1(x) = 
C. C-1(x) = 
D. C-1(x) = 
Answer: B
Mathematics
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Find the focus and directrix of the parabola.y2 = 28x
A. (7, 7); x = 7 B. (7, 0); x = 7 C. (0, 7); y = -7 D. (7, 0); x = -7
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Simplify the expression. Assume that all variables are non-negative.
A. 9xy
B. 9xy
C. 3xy
D. 9xy
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Write the number without exponents.2.95 × 10-4
A. 0.0000295 B. 0.00295 C. -295,000 D. 0.000295
Mathematics
Using the horizontal-line test, determine whether the function is one-to-one.
A. one-to-one B. not one-to-one
Mathematics