3. A pharmacist needs a blend of chemical containing 35% of manganese but she has one vial at 40% and another at 25%. How many of each must be mixed to provide 100 pounds of
35% manganese?

Liz is shipping a package to her friend. the maximum weight of a medium flat-rate box is 20 pounds, including the box which weighs 6 ounces. write and solve an inequality to describe the possible weight in pounds, w, of the contents that liz will ship to her friend if she must use a medium flat-rate box. use the drop-down menus to explain your answer.