Answer: A and D
Step-by-step explanation: is a rational number because when calculate the square root 400 you get 20. is a rational number. The area of the square would be perfect square because 20*20=400. A and D are the correct answers.
Just multiply all them together for volume, 468 ft ^3
Your notation is wrong. You cannot have big H and little h at the same time. You need to find h(-3) or H(-3).
I assume you need h(-3), which means that the function is h(x) = 4x - 7.
See picture.