I need some help math plzz plz

Question

Tom gets paid $12 for every lawn he mows. The amount of money he earns depends on the number of lawns he mows.Which is the dependent variable, and which is the independent variable?

A.The dependent variable is the number of lawns he mows, and the independent variable is the amount of money he earns.

B.The dependent variable is the amount of money he earns, and the independent variable is the number of lawns he mows.

C.The dependent variable is the amount of money he earns, and the independent variable is the area of the lawn.

D.The dependent variable is the area of the lawn, and the independent variable is the amount of money he earns.

Answer 1

The wording to this problem almost gives itself away: "The amount of money he earns depends on the number of lawns he mows"

The answer is B. The independent variable is the thing that Tom can choose; he can mow one lawn, or he can mow lots of lawns, or he can mow no lawns! But the amount of money he makes is tied directly to that number, and is therefore the dependent variable.