How many 3 digit numbers can you make if the last number must be 5 and there can be no repeats?

Find the lateral surface area plzzz

Twenty-five percent of the customers entering a grocery store between 5 p.m. and 7 p.m. use an express checkout. consider five randomly selected customers, and let x denote the number among the five who use the express checkout.

Identify one charcteristic of exponential growth