Please help. i have no idea where to start

Plzzz asapppppp what is the inverse of f if f(x)=^3 sqrt x-5

If your annual gross income is $62,000 and you have one monthly car payment of $335 and a monthly student loan payment of $225, what is the maximum house payment you can afford. consider a standard 28% front-end ratio and a 36% back-end ratio. also, to complete your calculation, the annual property tax will be $3,600 and the annual homeowner's premium will be $360.

When only separate discreet points are graphed it is called?