Hello!
So to answer this question, there are two major steps you need to do. These steps are multiplication and addition. The equation to model this situation is this:
(2.18 x 5) + (2.22 x 3) = X
(X is the total amount that Jacob paid)
To solve this equation, you want to use the order of operations.
First, you will multiply inside of the parenthesis.
2.18 x 5 = 10.90
So, the equation will look like this:
10.90 + (2.22 x 3) = X
Now, you have to multiply the other set in parenthesis.
2.22 x 3 = 6.66
The equation now looks like this:
10.90 + 6.66 = X
To find the value of X, we have to add the two values on the right side of the equation.
10.90 + 6.66 = 17.56
So, X = 17.56.
Jacob paid a total of $17.56 for the lemonades.
Hope this helps!