I NEED HELP WITH THIS QUIZ PLEASE EXPLAIN ALL ANSWERS

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]?

School has 204 sixth grade students. if the sixth grade is 30% of the total school, how many students are in the middle school?

To solve the system of equations below, pedro isolated the variable y in the first equation and then substituted it into the second equation. what was the resulting equation? { 5y=10x {x^2+y^2=36