Probably A, a plane
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Answer:
y=9x+9
Step-by-step explanation:
This is an linear equation, so
y=mx + b
m= money w=weeks
m= -20w +200
Answer:
h = 7 + 6x
Step-by-step explanation:
Since we are trying to find the height of the tree, we put h on the left side of the equation. Since the tree is 7ft tall at the moment, we write 7ft on the right side of the equation. Knowing that the tree grows 6 inches each year (x) we write 6x on the right side of the equation.
Answer:
D 1 and -1
Step-by-step explanation:

divided by 8

(x+1)(x+1)=0
so x=+-1