Answer:
Step-by-step explanation:
We can use the rule of three!
We know we have the following relationship:
[tex]\frac{49}{7} = \frac{x}{4}[/tex]
From here, we can solve this like any other equation:
[tex]4(\frac{49}{7}) = x\\x = 28[/tex]
Therefore, you would earn $28 after washing 4 cars.
Good luck!
