The Nelson family lives in a town where there is a swim club. At the beginning of the summer, they pay a membership fee of $40 and then $5 for each visit to the pool. Their friends, the Jacksons, live in the next town over and also pay swim club fees, which are expressed in the equation y=10x+15. What is the difference between what the Nelson family pays and what the Jackson family pays if each family visits the pool 8 times during the summer? Group of answer choices $15 $230 $160 $5