Jamie and Robert are both working this area puzzle. Jamie says: "I think the product must be (x+1)(x+7)
because the only numbers that multiply to make 7 in
the lower right corner would be 1 and 7. So the sum
would be x2 + 8x + 7"
Robert says: "I think that is one possible answer, but I
think there is actually another way to multiply to get a
7... what if we used two negative numbers? I think that
would still work, but give a different answer."
Who do you think is right?

What is the approximate circumference of the circle shown below?

Which representation has a constant of variation of -2.5

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.