Which situation results in a final value of exactly zero?

The temperature outside was 50* below 0 at 7:00 am. The temperature rose to 3* in each of the next 4 hours.

Hector earned 7.50 for every 8 hours of work. He used 60 of this money to buy video games.

Mrs.Kaplan received an order to bake 120 cookies she completed the order by baking 24 cookies every 30 minutes over a period of 5 hours.

A runner ran uphill during 2.4 minutes at a rate of 30 feet per minute. The runner ran downhill during 1.2 minutes at a rate of 15 feet per minute.

6 answers

I'll be glad to check your answer.
Okay, I will say the answer will be A?
3 * 4 = 12
-50 + 12 = -38

Nope.

I'll check one more guess. I suggest you do the math for each of these.
okay, what about be?
b I mean.
Yes, B is correct.