Answer: Jamal can purchase 5 sour straws.
Step-by-step explanation:
Let x represent the number of sour straws that Jamal can purchase.
He buys nachos for $7.50, and he wants to purchase some sour straws for $1.50 each. This means that the total amount that he would pay if he purchased x sour straws is
1.5x + 7.5
Jamal has $15.00 to spend at the concessions stand. This means that the number of sour straws that Jamal can purchase with the money that he has is
1.5x + 7.5 = 15
1.5x = 15 - 7.5
1.5x = 7.5
x = 7.5/1.5
x = 5
