Question

The city’s water company charges a fee of $20 a month in addition to a $0.25 per every gallon used. Using the function c=0.25x+20, where c is the total cost per month for water services and x is the gallons used, which of the following points on the graph accurately represents a monthly usage of 1,200 gallons?(1 point)Responses(320, 1,200)(320, 1,200)(1,200, 320)(1,200, 320)(1,200, −180)(1,200, −180)(1,200, 300)(1,200, 300)

Answer 1

Plug x = 1200 into c = 0.25x + 20: c = 0.25(1200) + 20 = 300 + 20 = 320.
So the correct point is (1200, 320).