6. Problems and Applications Q6 The price of coffee fell sharply last month, while the quantity sold remained the same. Five people suggest various explanations: Shen: Demand decreased, but it was perfectly inelastic. Valerie: Demand decreased, but supply was perfectly inelastic. Antonio: Demand decreased, but supply increased at the same time. Caroline: Supply increased, but demand was perfectly inelastic. Dmitri: Supply increased, but demand was unit elastic. Who could possibly be right

Bill is 31 years old, married, and lived with his spouse michelle from january 2018 to september 2018. bill paid all the cost of keeping up his home. he indicated that he is not legally separated and he and michelle agreed they will not a file a joint return. bill has an 8-year-old son, daniel, who qualifies as bill's dependent. bill worked as a clerk and his wages are $20,000 for 2018. his income tax before credits is $500. in 2018, he took a computer class at the local university to improve his job skills. bill has a receipt showing he paid $1,200 for tuition. he paid for all his educational expenses and did not receive any assistance or reimbursement. bill does not have enough deductions to itemize. bill, michelle, and daniel are u.s. citizens with valid social security numbers. 8. bill does not qualify to claim which of the following: a. head of household b. education benefit c. earned income credit d. all of the above