Posted by victor on Monday, November 21, 2011 at 10:03pm.
During each shift as a bus driver, Haley drives between 80 and 140 miles. She started the month with 4,500 miles driven.
What is a reasonable estimate for the number of total miles she has driven the bus, after 20 more shifts?

math  Steve, Tuesday, November 22, 2011 at 10:47am
Assuming some average mileage, I'd say she drives about 110 miles each shift.
So, she'll have about 4500 + 20*110 = 4500 + 2200 = 6700 miles