A)
Find the coordinates where the red line crosses at the given numbers:
(25, 200)
(35,280)
(40,320)
B)
Find the unit rate from above: 200 / 25 = 8
Multiply hours by the unit rate:
15 x 8 = $120
C)
Divide amount by unit rate:
240 / 8 = 30 hours.
D) No, 20 hours x 8 per hour = $160.
