Heather has divided 57100 between two investments, one paying 9%, the other paying 7%. If the return on her investment is 5555, how much does she have in each investment? Do not try to solve each problem algebraically Instead, make a guess that satisfies one or more conditions of the problem and then evaluate your guess. Keep adjusting your guesses until you have a solution that fits all the conditions of the problem. Heather invested $ at 9%, and $ at 7%. Help

Julius went on a volunteer trip to centralamerica and took medical supplies with him.he packed a bag with 50 pounds of supplies.he brought pieces of equipment that weighed10 pounds each and bottles of medicine thatweighed pound each prepresents thenumber of pieces of equipment he broughtand b represents the number of bottles ofmedicine he brought then the total weight canbe represented by the equation 10p+b 50.the brought 3 pieces of equipment, how manybottles of medicine did he bring?