Is ever whole number a multiple of 1. exsplain

Yes, every whole number is a multiple of 1. We say that b is a multiple of a when a*n = b (where n is a whole number). Since 1*b = b, for anynumber b, all numbers are multiples of  1

Answer for 2: his profit would be $2.88 explanation: you have to first multiply 72 and 0.12 together to get $8.64 once you do that you know how much money the shopkeeper made from selling the candy bars individually. so you have to do 8.64-5.76=2.88 hope that ; )answer for 3: yeah i’m sorry i have no idea what number 3 is. i’m sorry i couldn’t with that.