Suzette ran and biked for a total of 34 mi in 3.5 h. 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?

me, i am having a hard time grasping this concept.

Tom is the deli manager at a grocery store. he needs to schedule employee to staff the deli department for no more that 260 person-hours per week. tom has one part-time employee who works 20 person-hours per week. each full-time employee works 40 person-hours per week. write and inequality to determine n, the number of full-time employees tom may schedule, so that his employees work on more than 260 person-hours per week. graph the solution set to this inequality.