Answer is C I hope it helps
The equation would be 15x=$60. He would have to save $90 in total to buy the expansion pass. Also the x would be 4 in the equation if you needed it
A midpoint between the two could probably be 18.65
D because domain is always the x values range is always the y values and for this graph the line stops at 0 and doesn't go any higher so the domain is all the numbers lower than 0
