49. Using the same model, what does the model predict will be the number of hours Jack will work next July (think about what you should let x equal)? Round your answer to the nearest tenth. A) 117.3 B) 119.6 C) 124 B) 106.4 D) 128.4 50. If the best-fitting line (using computer software) is approximately f(x) = 2.248x + 77.136, then what does this model predict the number of hours Jack will work next January (let x = 13)? Round your answer to the nearest tenth. A) 104.2 C) 108.1 E) 121.5 D) 108.6 E) 110.2
49. Using the same model, what does the model predict will be the number of hours Jack will work next July (think about what you should let x equal)? Round your answer to the nearest tenth. A) 117.3 B) 119.6 C) 124 B) 106.4 D) 128.4 50. If the best-fitting line (using computer software) is approximately f(x) = 2.248x + 77.136, then what does this model predict the number of hours Jack will work next January (let x = 13)? Round your answer to the nearest tenth. A) 104.2 C) 108.1 E) 121.5 D) 108.6 E) 110.2
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
49 and 50
Transcribed Image Text:49. Using the same model, what does the model predict will be the number of hours Jack will
work next July (think about what you should let x equal)? Round your answer to the nearest
tenth.
A) 117.3
B) 119.6
C) 124
D) 128.4
E) 121.5
50. If the best-fitting line (using computer software) is approximately f(x) = 2.248x + 77.136,
then what does this model predict the number of hours Jack will work next January (let x = 13)?
Round your answer to the nearest tenth.
A) 104.2
B) 106.4
C) 108.1
D) 108.6
E) 110.2
$2
Transcribed Image Text:Over the past year Jack recorded the number of hours he worked each month. The table
below records the data with the first month being January (1) going through the calendar to
the last month of December (12).
Month (x)
Hours (y)
1
2
3
4
80 78 84 85
A) y = 2.5x + 76.5
B) y = 2.5x + 91.5
C) y = 2.222x + 86.222
O y = 2.222x + 77.333
5
85
47. Using the points (3, 84) and (12, 104)
write the equation of a linear model for the
data. Round decimals to the third decimal
place if necessary.
108-
104
100
96
-92-
-88-
84-
80-
6
100
y
O
7
O
105 90 90 94
2
8
3
4
9 10 11 12
5
6 7
100 110
8 9 10 11 12
48. Using the equation in the previous problem, what does the model predict the number of
hours Jack will work the next January (let x = 13)? Round your answer to the nearest tenth.
AD106.2
B) 115.1
C) 116.8
D) 109
E) 124
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