Max is thinking of a number, which he calls n. He adds 8 and then doubles the sum.

Write an expression to represent Max's number.

2(n+8)

what is max's final number if his starting number is 7?

If Max's starting number is 7, we can substitute n = 7 into the expression 2(n+8):

2(7+8) = 2(15) = 30

So, Max's final number would be 30.