Answer:
The x-int.s are (2, 0) and (4, 0) so the midpoint will be (3, 0).
2 times the cube root of 8x+9=5
divide both sides by 2
cube root of 8x+9=2.5
cube everybody (put to 3rd power)
8x+9=2.5^3
8x+9=15.625
minus 9 both sides
8x=6.625
divie both sides by 8
x=0.828125
Add the mother's height or the fathers height in either inches or centimeters
You should definitely improve the quality of the image, because I can't see anything clearly.
Also, the 4th answer is hidden.