Answer:
5
Step-by-step explanation:
Equation: 7.5 + 1.5x = 15
Subtract 7.5 from both sides you get 1.5x = 7.5
Divide both sides by 1.5 you get 5.
He can buy a total of 5 sour straws.
Hope this helps :)
bc is 26
Thanks you too