Zach had a pocketful of pesos as he walked to the mall. Once inside, he headed to his favorite shoe store to buy a new pair of shoes. Zach bought shoes for 2,700 pesos and still had a total of 1,500 pesos left in his pocket. Write an equation you can use to find the amount of money Zach started with.

Astudy was interested in determining if eating milk chocolate lowered someone's cholesterol levels.ten people's cholesterol was measured. then, each of these individuals were told to eat 100g of milk chocolate every day and to eat as they normally did. after two weeks, their cholesterol levels were measured again. is there evidence to support that their cholesterol levels went down? how should we write the alternative hypothesis? (mud = the population mean difference= before - after)a. ha: mud = 0b. ha: mud > 0c. ha: mud < 0d. ha: mud does not equal 0