Evaluate the expression when c=6 and x=-3. -c+9x What is the answer?

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

The function models the number of accidents per 50 million miles driven as a function