Question

Write an equation in the form y=mx+b. Then solve each problem.

1. A contractor's crew can frame 3 houses in week. how long will it take them to frame54 houses if they frame the same number each week?

2. A water tank holds 18,000 gallons. How long will it take for the water level to reach 6000 gallons if the water is used at an average rate of 450 gallons per day?

Answer 1

1) y = 3x + 0

54 houses = 3 houses/week * x weeks

x = 18 weeks

2) y = -450x + 18000

6000 gallons = -450 gallons/day * x days + 18000

x = 10 days