What are the coefficients for the binomial expansion of (a + b)3? O 1, 4, 6, 4, 1
O 1,1
O 1, 2,1
O 1,3,3, 1

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