How to evaluate k-(k-h) use h = 1 and k = 1

Solve the system of equations. y= 2x y= x^2 - 15

List the sides of δrst in in ascending order (shortest to longest) if: m∠r =x+28°, m∠s = 2x+16°, and m∠t = x+12°

If you apply the changes below to the linear parent function f(x)=x what is the equation of the new function vertically stretched by a factor of 3 flip over the x axis