Buzz is buying 143 sodas for his pool party. they sold in packs of 12 and 35. pack of 35 is $12.58 and pack of 12 is $7.19.how many packs of 35 should she buy and how many pcks of 12 she buy so she spend least amount of moneu?

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