A firm with total revenue of $500, total cost of $700, and variable cost of $400 should continue to operate its production facility.

Which of the following is not a major trading partner of the U.S.?

a. Canada b. Mexico c. Russia d. China

Suppose Jack and Kate are at the town fair and are choosing which game to play. The first game has a bag with four marbles in it-1 red marble and 3 blue ones. The player draws one marble from the bag; if it is red, they win $20 and if it is blue, they win $1. The second game has a bag with 10 marbles in it-1 red, 4 blue, and 5 green. The player draws one marble from the bag; if it is red, they win $20; if it is blue, they win $5; and if it is green, they win $1. Both games cost $5 to play. Kate decides to play the second game. Her probability of pulling out a green marble is:

A. 40 percent. B. 75 percent. C. 10 percent. D. 50 percent.