Question

Sam earned $154 washing 7 cars. He earned the same amount for washing each car.
Choose all the equations that show reasonable estimates for the amount Sam earned washing each car.

Answer 1

Let's denote the amount Sam earned for washing each car as "x."

The given information states that Sam earned $154 washing 7 cars. So, we can form the equation:

x * 7 = 154

Now, let's analyze the options:

1. x = $21. This equation can be obtained by dividing $154 by 7: 154 / 7 = 22. This suggests that Sam earned $21 for washing each car, which is a reasonable estimate.

2. x = $35. This equation can be obtained by dividing $154 by 4: 154 / 4 = 38.5. However, since it's stated that Sam washed 7 cars, 35 is not a reasonable estimate.

3. x = $22. This equation can be obtained by dividing $154 by 7: 154 / 7 = 22. This suggests that Sam earned $22 for washing each car, which is a reasonable estimate.

Therefore, the equations that show reasonable estimates for the amount Sam earned washing each car are:

- x = $21
- x = $22