PLEASE HELP! The cost, in thousands of dollars, of producing x thousands of textbooks is C ()=2+10+30. The revenue, also in thousands of dollars, is R(x) = 4x. Find the profit or loss if 3,000 textbooks are produced. (profit = revenue – cost)

A $21,000 loss
B $57,000 profit
C $3,000 profit
D $57,000 loss

Liz is shipping a package to her friend. the maximum weight of a medium flat-rate box is 20 pounds, including the box which weighs 6 ounces. write and solve an inequality to describe the possible weight in pounds, w, of the contents that liz will ship to her friend if she must use a medium flat-rate box. use the drop-down menus to explain your answer.