So firstly, let's figure out the expression for a singular goody bag. Since there's 2 of each item, a single goody bag is going to be

Now since we have 7 friends who are all getting 1 goody bag, multiply the cost of the goody bag by 7, and our expression is
. Now we can solve it from there.
Firstly, solve the multiplication inside the parentheses:

Now add up what's inside the parentheses:

Lastly, multiply and your answer will be $56.56