A culture increases by 500 bacteria every 2 hours. If there are 500 bacteria at the beginning, how many bacteria will there be after 24 hours? I got 6500 but was marked wrong.

Plz ! what is the volume of this pyramid? with numbers of 30cm 14cm 18cm

Which value of c would make he following expression completely factored? 8x+cy

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.