Acontractor uses the expression 7(x+3) to find the lenght, in feet, of chain that he needs for a certain project. part a the contractor needs four chains that are this lenght. what is the total lenght of all of the chains?

Given that x is the number of chains;

7(4+3) = 7 * 7 = 49 feet

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.