Paco paid $2.99 for each mango-banana smoothie

Then paco payed $2.99

There is no Question here, but with the facts you provided, i would assume that he payed $2.99 for each mango-banana smoothie. I need a total amount of dollars to find out how many he bought. 

1.17+3.99a. you combine the terms with a to create 3.99 and the 1.17 stays because it has no like terms or a variable