A mason needs to lay out the fooling for a stone retaining wall. The wall will be 5 feet high, 14 feet long, and 1 foot wide. The mason drives stakes at each comer of his footing and strings a line so he can see where the footing will be. How can the mason find out how much string he needs?

answer: it's d

step-by-step explanation:

u = -(6/7)w

step-by-step explanation:

place all values with 'u' on one side of the equation.

4u + 8w = - 3u + 2w

4u + 3u = 2w - 8w

further simplify the equation by solving the addition and subtraction.

7u = - 6w

make 'u' the independent variable by placing its co-efficient on the right-hand side.

u = - (6/7)w