Which club will be least expensive if John plans to attend for 8 months?

Question

The total membership cost in dollars, y, at World Fitness Health Club can be represented by the following graph, where x is the number of months of membership. Use the graph to create a linear function when the one time registration fee is $25. 

 

At Purple Experiment Health Club, a member pays y dollars, which includes a one-time registration fee of $15 plus $20 each month, x, they are a member.

Which club will be least expensive if John plans to attend for 8 months?

World Fitness because after 8 months John would have paid $145.

Purple Experiment because after 8 months John would have paid $145.

World Fitness because after 8 months John would have paid $175.

Purple Experiment because after 8 months John would have paid $175.

Answer 1

purple for $145 for 8 months

while world costs 175

save $30 with purple