Answer:
C
Step-by-step explanation:
y = 2.5 x - 57
y = Profit: 143
143 = 2.5 x - 57 Add 57 to both sides
143 + 57 = 2x - 57 + 57 Combine like terms
200 = 2.5 x Divide by 2.5
200/2.5 = 2.5x/2.5
x = 80 plants
70%
X = 4
Add x to both sides
6x = 24
Divide by 6 in both sides
x = 4
y = -2x - 1
y = -2x + b
3 = -2(-2) + b
3 = 4 + b
-1 = b
