Ryley paid $116 last month for her gym membership, including a monthly fee and $4 for each visit to the gym. Last month she went to the gym 19 times. Using the point-slope form of a line, find the amount of her monthly dues.
I don't have a line, but the answer is the payment of each visit is $76 in total, so you can subtract that from the $116 to get a monthly payment of $40.
