Tatiana manages a store that sells MP3 players. Each MX300 takes 4 hours to create the plastic pieces, 2 hours to create the electronics, and 19 hours of labor to assemble the final product. Each Rocker requires 2 hours to create the plastic pieces, 6 hours to create the electronics, and 14 hours of labor to assemble the final product. The factory has 440 hours to create the plastic pieces, 750 hours to create the electronics, and 2180 hours of labor to assemble the final product each week. If each MX300 generates $12 in profit, and each Rocker generates $14, how many of each of the MP3 players should Tatiana have the store sell each week to make the most profit?

Martha has a deck of cards. she has lost some of the cards, and now the deck only contains nine spades, eleven diamonds, eight clubs, and twelve hearts. martha predicts that whenever she draws a card from the deck without looking, she will draw a club one-fifth of the time. which activity would best allow martha to test her prediction? a. randomly draw a card from the box and see if it is a club. b. randomly draw a card. then, continue to draw another card until all eight clubs are drawn. c. randomly draw and replace a card 120 times. then, observe how close to 30 times a club is drawn. d. randomly draw and replace a card 100 times. then, observe how close to 20 times a club is drawn.