Answer:
He earns $4 for a load of laundry and $2 for a load of dishes.
Explanation:
This question can be solved by a system of equations.
I am going to say that:
x is how much he earns for a load of laundry.
y is how much he earns for a load of dishes.
Last week, he did 1 load of laundry and 3 loads of dishes, and his parents paid him $10.
This means that:


The week before, he finished 1 load of laundry and 7 loads of dishes, earning a total of $18.
This means that

Since






He earns $4 for a load of laundry and $2 for a load of dishes.