9x — 1 = 10x + 9
Y’all know how to solve this??

Plz me i need i will give a brain

Which of the following graphs represents the function f(x) = 2^x

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?