Hadley works at a fitness center. she decides to collect data relating the number of hours different people who use the fitness center exercise per week to the number of calories each person burns. the scatter plot shows the data she gathers and the line of best fit. using technology, she finds that the equation of the line of best fit is y = 220x. when she signs a new fitness center member up, he says that his goal is to burn 880 calories each week. using her data, how many hours of exercise should hadley recommend for him? a. 5 hours b. 6 hours c. 4 hours d. 3 hours