The formula d = rt. find how long it takes an airplane to fly 375 at 500 miles per hour

In exponential growth functions, the base of the exponent must be greater than 1,how would the function change if the base of the exponent were 1? how would the fiction change if the base of the exponent were between 0and 1

Is it greater than or less than7*3_9*2

Given the equation    = 5, solve for x and identify if it is an extraneous solution