To paint a house, a painting company charges a flat rate of $500 for supplies, plus $50 for
each hour of labor.
y=500x150
4,000
3,000
y (dollars)
2,000
1,000
g
10
20
50
60
30 40
x (hours)

how much would the painting company charge to paint a house that needs 20
hours of labor? a house that needs 50 hours