Please help me now pleases

Given the parent function of [tex]f(x)=x^4[/tex], what change will occur when the function is changed to [tex]f(\frac{1}{2} x)[/tex]?

Three times the sum of a number and seven is negative thirty-six. what is the number?

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?