Seventh grade BB.16 Box plots SKN
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Last school year, Trent kept track of the amount of time he spent on homework each night.
This box plot shows the results.
Time spent on homework (min.)
20
40
60
80
100
120
What percent of the time did Trent spend at least 80 minutes on homework?
%
Submit

the square root of what number? if you add that, then someone will probably answer the question.

0.32

step-by-step explanation:

2.24/7

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.