Help plzxxzz answer 1 2 and 3 plz

Which of the following pairs of functions are inverses of each other? o a. f(x)=x72+8 and 96-9 = 7/x+2) =8 o b. f(x)= 6(x - 2)+3 and g(x) - *#2-3 o c. $4) = 5(2)-3 and 90- 4*: 73 o d. f(x) = 6)-12 and 910 – +12

Can someone check if i did this correct. it’s number 4 if you’re wondering.

Solve for n? [tex]z = \frac{3}{4} mn[/tex]