SOLUTION: How do i Complete the double inequality that describes the mileage range of the truck for the following information: The distance that a truck can travel in 8 hours, at a constan

Algebra ->  Inequalities -> SOLUTION: How do i Complete the double inequality that describes the mileage range of the truck for the following information: The distance that a truck can travel in 8 hours, at a constan      Log On


   



Question 706345: How do i Complete the double inequality that describes the mileage range of the truck for the following information:
The distance that a truck can travel in 8 hours, at a constant rate of r mph, is given by 8r. A trucker wants to travel at least 375 miles, and company regulations don't allow him to exceed 450 miles in one 8-hour shift.

Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
d = rt

d = r*8

d = 8r

So he travels 8r miles

The trucker must travel at least 375 miles, so this means 8r+%3E=+375. Flip things to get 375+%3C=+8r

"and company regulations don't allow him to exceed 450 in one 8-hour shift.", so 8r+%3C=+450

Combine 375+%3C=+8r and 8r+%3C=+450 to get the final answer: 375+%3C=+8r+%3C=+450