I need help with number 7

What is the length and width of a 84.5 square foot rug? will mark

David and alton are training for a race. they spend 35 minutes stretching and then go on a 5 mile practice run. david runs at a pace of 7 min/mile. alton runs at a pace of 8 min/mile. write an equation for each runner that shows the total length of their workout. then solve each equation showing your work

Angle m aoc=108° m aob=3x+4° m boc=8x-28° find m aob