Chloe lives in an area where she runs the air conditioned runs for 7 hours per day at a cost of 21 cents per hour. how much does spend per year on utility bills for the air conditioner? ( assume there are 30 days in each month) a. $ 705.60 b. $ 588.00 c. $216.09 d. $176.40

$529.20

Step-by-step explanation:

If there are 30 days in a month and there are 12 months in a year,

30*12 = 360  

then there are 360 days in a year

Assuming we run at 7 hours per day

 7 hrs/ day * 360 days = 2520 hours

We will run 2520 hours in a year

At $.21 per hour,

.21* 2520 = 529.20

It will cost $529.20  to run the air conditioner for the year

None of the choices

8+10

step-by-step explanation:

you multiply 4 by 2 and 5 by 2

answer: #1 ads up by 8 and i don't know #2