The perimeter of a rectangular fence is to be at least feet and no more than feet. If the length of the fence is to be the width, what is the range of values for the width of the fence?

An equation of the line tangent to y=x^3+3x^2+2 at its point of inflection is

He concluded that a heavier object dropped from the same height as a lighter object will land

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.