Answer:The formula looks like this: SA=2lw+2lh+2hw, where SA = surface area, l = length, w = width, and h = height. In the rectangular prism net above, l = 8 inches, w = 5 inches, and h = 3 inches.
Step-by-step explanation:
Answer: d) -5, -40, -640
<u>Step-by-step explanation:</u>

The two angles are supplementary angles, which when added together equal 180 degrees.
6x -10 + 6x +10 = 180
Combine like terms:
12x = 180
Divide both sides by 12:
x = 180/12
x = 15
The answer is C) 15
It’s 4 because if it were on a graph you’d count up 2 over 3 and over 5 up 9