Question 7
The Student Council at Woodlands Middle School is planning a field
trip. They polled randomly selected teachers and students and asked
what they want to eat for lunch. The results are shown in the tables
below.
Which of the following statements is true?
Burgers
17
19% of the people polled who prefer
burgers are teachers
Students
Teachers
Total
Pizza
23
6
29
4
21
19% of the people polled prefer burgers
Students
Teachers
Toto
Pizza
793
20.73
100
Burgers
810
19.03
100
19% of the teachers polled prefer
burgers

i dont know

step-by-step explanation:

umm. i dont know

55.44 inches

step-by-step explanation:

part a. assuming a perfectly linear relationship, we can find the slope from the first two data points.

slope = m = (change in rainfall)/(change in years)

= (61.80 -62.33)/(2005 -2004) = -0.53/1 = -0.53

then the point-slope form of the equation of the line can be written as

y = m(x -h) +k . . . . . m = -0.53, (h, k) = (0, 62.33)

y = -0.53x +62.33 . . . x = years after 2004

part b. in 2017, x = 2017 -2004 = 13. then the predicted rainfall is

y = -0.53·13 +62.33 = 55.44 . . inches

the predicted rainfall in 2017 is 55.44 in.