There are 280 students and 30 teachers at Pete's school. The students and teachers will vote on Friday to choose a new school mascot. The principal has asked Pete to survey a sample of the teachers and students to try to predict the outcome of the mascot election. The day before the election, Pete visits all three lunch periods. He asks 25 students at random in each period which mascot they will vote for. He places a survey form in each teacher's mailbox. 12 teachers respond to the paper survey. Their votes are tallied in the table below.

What is the perimeter, p, of a rectangle that has a length of x + 8 and a width of y − 1? p = 2x + 2y + 18 p = 2x + 2y + 14 p = x + y − 9 p = x + y + 7

Suppose you have 10 skittles. 5 green and 5 red. you choose 4 without looking. what is the probability that all 4 skittles will be green?

Aconcession manager at yankee stadium wants to know how temperature affects beer sales. she took a sample of 10 games and recorded the number of beers sold and the temperature in the middle of the game. temperature 80 68 78 79 87 74 86 92 77 84 number of beers 20533 1439 13829 21286 30985 17187 30240 87596 9610 28742 a. draw a scatter plot of the data. b. the manager estimates the regression equation to be: numberofbeers = −100, 678 + 1, 513 ∗ temperature draw this on your scatter plot. c. for one of the estimated points, indicate the residual with ei . d. for that same point, indicate what part of the variation is explained by the model with ˆyi − y¯.