Answer:
7 cars
Step-by-step explanation:
(first you have to figure how much he spent on his red cars)
2 x 1.50= 3.00
(and then you figure how much is left after buying them)
10 - 3= 7
(if he has $7 left and they're $1 each he can buy 7 cars)
7 ÷ 1= 7
Please mark as brainliest