ANSWER PLEASE I think it's 6 but it's just to much thinking A

Find the percent error of the measurement 4 cm

Find the measurement of angle b in the following triangle

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