The perimeter of Mike’s garden is 110 ft. It is 9.5 ft wide. Write an equation with one variable to determine the length (l) of Mike’s garden.

B. 16

Step-by-step explanation:

Solve for s:

4(2s - 1) = 7s + 12

Expand out terms of the left hand side:

8s - 4 = 7s + 12

Subtract 7 s from both sides:

(8s - 7s) - 4 = (7s - 7s) + 12

8s - 7s = s:

s - 4 = (7s - 7s) + 12

7s - 7s = 0:

s - 4 = 12

Add 4 to both sides:

s + (4 - 4) = 4 + 12

4 - 4 = 0:

s = 12 + 4

12 + 4 = 16:

s = 16