Answer:
All real numbers
Step-by-step explanation:

Start by distributing -2 inside the parentheses.

Combine like terms on the right side of the equation.

Subtract 8 from both sides of the equation.

Divide both sides by -2 to isolate y.

This is a true statement, so there are infinite solutions.
Answer:
The first one is F' each one is around $36
K.E=0.5mv^2
GPE=mgh
The child has both K.E and GPE


g is taken as 9.81