A graphing calculator can help find the number(s) that meet this requirement.
The number could be 15, or -14.
8-5(3x-7)
Distribute:
8-15x+35
Combine like terms:
-15x+43
So, 'D' would be your answer.
The first answer would be A because the volume is l*w*h so you would multiply 24 by 10 by 12 which gives you 2880 ft^3
I don't know how to do the second question. I am sorry!