Unit test part 2 systems of linear equations and inequalities 1. Suzette ran and biked for a total of 34 miles in 3.5 hours. Her average running speed was 6 mph and her average biking speed was 12.5 mph. Let x = total hours suzette ran. Let y= total hours suzette biked. Use substitution to solve for x and y show your work check your solution. (A) how many hours did suzette run? (B) how many hours did she bike?