Someone me out with this (pic included)

Which is the graph of f(x) = (4)x? image for option 1 image for option 2 image for option 3 image for option 4

When using the linear combination metho e linear combination method to solve a system of linear equations, the four options are:

James is playing his favorite game at the arcade. after playing the game 3 times, he has 8 tokens remaining. he initially had 20 tokens, and the game costs the same number of tokens each time. the number t of tokens james has is a function of g, the number of games he plays. write the function’s formula? t=