Help ASAP!
The stack consists of five rows of boxes that are all the same size.

What is the inverse of the function f(x)=2x+1

Players on the school soccer team are selling candles to raise money for an upcoming trip. each player has 24 candles to sell. if a player sells 4 candles a profit of$30 is made. if he sells 12 candles a profit of $70 is made. determine an equation to model his situation?

Asap! i'm not good math and i'm lost.