Every 2 days a scientist spends 1.25 hours observing dolphins and 3.5 hours observing sea lions. at this rate, how many total hours will the scientist spend observing dolphins and sea lions in 6 days?

What values of x satisfy the inequality x^2-9x< 0? how is your answer shown on the graph?

45 was divided by a power of ten to get 4.5. what power of ten was it divided by? people 4.5

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.