1. you are surveying students to find out their opinion of the quality of food on the cafeteria. you decide to poll only those students who buy a hot lunch on a particular day. is your sample random? explain!
2. a researcher tagged 40 giant turtles in 2008. in 2009, she returned and captured 50 turtles 16 of which were tagged. in 2010 she returned again and captured 30 turtles, 8 of which were tagged.
a. use a proportion to estimate the turtle population for 2009
b. use a proportion to estimate the turtle population for 2010

The boiling point of water at an elevation of 0 feet is 212 degrees fahrenheit (°f). for every 1,000 feet of increase in elevation, the boiling point of water decreases by about 2°f. which of the following represents this relationship if b is the boiling point of water at an elevation of e thousand feet? a) e = 2b - 212 b) b = 2e - 212 c) e = -2b + 212 d) b = -2e + 212

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.

M.xyz =radians. covert this radian measure to its equivalent measure in degrees.