To bowl two games costs $7 and to bowl four games it costs $14. what equation can be written to show the relationship between the cost, c, and the number of games, g, bowled?

If you divide 7 by 2 it equals 3.5 meaning each game is 3.5 dollars.  So you can find how much any number of games would be by using this equation g (3.5) = c  For example, if there were 3 games then you would do 3 (3.5) = c and the cost would be 10.5 dollars.  

you didn't give me the choices, so i will just give you the graph so you can look at your choices and choose the right one.