A farmer can get two dollars per sack of potatoes on the first of July and after that the price drops by 1 cents per sack per day. On July 1st the farmer has 80 sacks of potatoes in the ground. She estimates that the crop is increasing by one sack per day. When should she harvest to get the most money

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.