The price of a fan is $15. This price is 27% lower than last week. What was the price of the fan last week?

Round your answer to the nearest cent.

$20.55

Step-by-step explanation:

The price of a fan is $15. This price is 27% lower than last week.

x = the price of the fan last week.

The price this week is 27% lower, so the price this week is (100 - 27)% of the price last week. The price this week  is 73% of the price last week.

x * 0.73 = 15

Rearrange to find x.

x = 15 / 0.73

x = 20.5479452055

Round to the nearest cent.

x ≈ $20.55

i believe it is c.y = 9x

rise over run. 9 units up over 1 unit right or 9/1