I need help solving a few questions in relation to functions. I would greatly appreciate if someone could explain the steps in how to solve each and not just give me the answer

. The first equation is:

1. Given the function f(x)={2x+1, x<2

{X

^{2} , 2 <_( less than or equal) x < 5. Find f(0), f(3), f(8)

{3x-2, x >_(greater than or equal) 5.

2. Find the function that shifts f(x)= X

^{5}three units to the left and 4 units down.

3. If P=2xy and y= 3x+2, express P as a function of X.

thanks for your help!!!