The answer may be 7 or 12
The equation is d=12m for amount you earn is 12 dollars per mow sesion.
12x10=120 after 10 times mowing you earned $120 (not bad)
Using the diagram, we can conclude that the radius is 10 feet, and the height is 6 feet.
Plug in the values for radius and height into the equation.
V = π10^2*6
Simplify in terms of pi.
V = 600π
Round pi to 3.14 and multiply by 600.
V = 1,884
1,884 cubic feet is your answer.
In the image you provided, I do not see a fourth option that includes 1,884 cubic feet. I would assume that the camera did not take a full picture of the answer choices.
Plug in 1 for n and solve, then plug in 2, and so on until you get to 3(6)-1=17
