Kelly ran 2 miles and burned 240 calories. the next day she ran 3 miles and burnd 360 calories. the next day 4 miles and 480 calories. if this pattern contiues how many calories will she burn if she run 8 miles?

Atruck can be rented from company a $50 a day plus $0.60 per mile. company b charges $20 a day plus $0.80 per mile to rent the same truck. find the number of miles in a day at which the rental costs for company a and company b are the same