How do u work this app??

Who is not spending wisely? erika goes shopping and saves her receipts. she totals how much she spent and writes it down. mia needs to buy a new pair of shoes because she joined the soccer team. she looks at newspaper ads to find the best price. lauren has been thinking about getting a puppy for a long time. she walks by the pet store at the mall and decides to get a puppy. erin makes a purchase online using a credit card. she knows that she can pay the entire bill when it arrives.

Oz makes lion food out of giraffe and gazelle meat. giraffe meat has 18 grams of protein and 36 grams of fat per pound, while gazelle meat has 36 grams of protein and 18 grams of fat per pound. a batch of lion food must contain at least "46,800" grams of protein and 70,200 grams of fat. giraffe meat costs $1/pound and gazelle meat costs $2/pound. how many pounds of each should go into each batch of lion food in order to minimize costs? hint [see example 2.]

Stormie zanzibar owns a bakery in the fictitious country of olombia. each month the government’s market ministry mails her a large list of the regulated price of goods which include products like bread, muffins and flat bread. the list also dictates the types of goods she can sell at the bakery and what she is to charge. because of the regulations placed on these goods, stormie has increased her production of sweets, pies, cakes, croissants and buns and decreased her supply of breads, muffins and flat bread. she has taken these steps because the sweet goods’ prices are not government controlled. stormie zanzibar lives under what type of economy?