Answer:
x≥5
Step-by-step explanation:
..... . .............
Step-by-step explanation:

Now adding powers


Hope it will help :)
4(2x-4)^2 - 3
4(4x^2 - 2(4)(2x) + 16) - 3
4(4x^2 -16x + 16) - 3
16x^2 - 32x + 32 - 3
16x^2 - 32x + 29
Thats 10 feet because there are 12 inches in a foot