Ok, these are problems from a summer packet I have to turn in for precalc honors. The problems are based around algebra 2.

Find the inverses, f^-1(x) of the following functionsusing 3 different methods.

f(x)=x^2 +2x -5

f(x)=log_9e^sin(x/2) <---I really need help with this one.

f(x)=2x+1

3-x

Solve each of the following systems algebraically and using matrices

√3x - 2y = -1

2x + 5y^2 = 12