An exponential function f(x)=a⋅bx passes through the points (0, 3000) and (2, 480). What are the values of a and b?

Graph the equation by plotting point x=2

The table shows the balance of a money market account over time. write a function that represents the balance y (in dollars) after t years.

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?