When total revenue remain unchanged when there is a change in price, demand is

If hiring the 7th worker increases total product by 5 units and the price of each unit is $2,

a. the firm should not hire the 7th worker as MBMC d. the firm should not hire the 7th worker as MB

China's strategy of breaking the vicious circle of poverty focused on

a. transforming itself into a market-based economy b. reducing the resources devoted to infrastructure development c. refusing to trade with foreign countries d. reducing population growth by stringent restrictions on family size e. developing more traditional and labor-using production techniques