Answer:
MEEP
Step-by-step explanation:
20 feet
1st piece = x
2nd piece = 2x
3rd piece = 6x
x+2x+6x=180
9x=180
x=20
so the first piece is 20 feet, the second is 40, and the third is 120.
$87.20
the slope is 2.
the y-intercept is (0,3)