Sara's mom takes the parkway to work. It takes her 30 minutes to travel from mile marker 88 where she enters to her exit at mile marker 121. What is her average speed? 4. 0 mph 16. 5 mph 33 mph 66 mph.

Which labels do x and y represent? x: scattered bundles y: multiples of four or five x: scattered bundles y: multiples of three x: bundles in a ring y: multiples of four or five x: bundles in a ring y: multiples of three