Suppose the demand for shoes is given by qd= 185 -0.5p. the supply of shoes is given by qs= 10p -340. calculate the gains from trade (also known as economic surplus) that would exist in this market in a competitive equilibrium.

Rebel technology maintains its records using cash-basis accounting. during the year, the company received cash from customers, $43,000, and paid cash for salaries, $23,500. at the beginning of the year, customers owe rebel $1,000. by the end of the year, customers owe $6,600. at the beginning of the year, rebel owes salaries of $5,600. at the end of the year, rebel owes salaries of $3,300. determine cash-basis net income and accrual-basis net income for the year.