Question

The science club charges $4.50 per car at their car wash. Write and solve an inequality to find how many cars they have to wash to earn at least $300.

Answer 1

$4.50x ≥ $300
hope this helps!

Answer 2

67 cars.

Explanation:

Let x represent number of cars.

We have been the science club charges $4.50 per car at their car wash. the amount earned for washing x cars would be
`4.50x`.

We have been given that the science club have to earn at least $300. This means that amount earned for washing x cars would be greater than or equal to 300.

We can represent this information in an inequality as:

`4.50x\geq 300`

`(4.50x)/(4.50)\geq (300)/(4.50)`

`x\geq 66.66`

Since the closest integer to 66.66 is 67, therefore, they have to wash 67 cars to earn at least $300.