(A) 0.8 (2x + x) + 3(7 - 4.1x) = x + 21

(B) 12 (6x + 22y) =
x +
y

(C) (3x -
) - (6x + 1) = -3x - 2

(D) 112x + 27y =
(12x + 9y)

The water company charges a residential customer $41 for the first 3,000 gallons of water used and $1 for every 200 gallons used over 3000 gallons. if the water bill was $58 how many gallons of water were usedanswersa 3400 gallonsb 6000 gallonsc 6400 gallons d 7000 gallons