Aeucalyptus tree deglupta a gum tree free 150 feet in 15 years how many feet did gum tree average in growth each year

The Answer is: 10 feet per year.

Step-by-step explanation:

Take the overall height and divide by the number of years. This will give you feet per year:

150 ft / 15 years = 10 ft per year

Proof:

15 * 10 = 150

150 = 150

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x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18