Answer:
I would say that the answer is A. -4x + 9y = 11
Hope it helps, sry if it's wrong. It shouldn't be though.
3x-7=-2-6
3x=-2-6+7
3x=-1
X=-3
Answer: 80 cubic feet
Step-by-step explanation:
Hello! Your question was not very clear, but I'm assuming you need to find the volume of the sandbox.
To find volume, you need to multiply height by width by length, which is h*l*w.
Height: 1 foot
Width: 8 feet
Length: 10 feet
V=8*10*1=80 cubic feet.