ANSWER
h = 10 hours
EXPLANATION
D) We have that the equation that describes the situation is given as:
2h = 3h - 10
We need to solve for h, the number of hours that Chris spent working.
Do that by collecting like terms:
=> 2h - 3h = -10
-h = -10
Divide both sides by -1:
=> h = -10/ - 1
h = 10 hours
Therefore, Chris worked for 10 hours.
