100 Q G 2500 800- regression feature of a calculator to find the best-fitting cubic function for the data. Give the first x³+x²+x+0 function with the data. Choose the correct graph below. OB. 100 2500+ Q

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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X(in mph) 20 30 40 50 60 65 70
Y(in feet) 815 1090 1485 1840 2140 2315 2490

complete questions 

a) Make a scatter diagram of the data. Choose the correct graph below.
O A.
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b) Use the regression feature of a calculator to find the best-fitting linear function for the data. Give the coefficient before x to the nearest hundredth, and the constant to the nearest tenth.
y = 33.88x=117.7 (Type your answer in slope-intercept form.)
Graph the function with the data. Choose the correct graph below.
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c) Use the regression feature of a calculator to find the best-fitting cubic function for the data. Give the first and the second coefficients to four decimal places, the third coefficient to the nearest hundredth, and the constant term to the neares
y=(x³ + (x² + (x+0
Graph the function with the data. Choose the correct graph below.
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Transcribed Image Text:a) Make a scatter diagram of the data. Choose the correct graph below. O A. 2500- 1 800- 0 OA. 2500 8007 OA. 100 2500 800+ Q 100 OB. Q 100 2500- 800 0 b) Use the regression feature of a calculator to find the best-fitting linear function for the data. Give the coefficient before x to the nearest hundredth, and the constant to the nearest tenth. y = 33.88x=117.7 (Type your answer in slope-intercept form.) Graph the function with the data. Choose the correct graph below. B. 2500- 800- 0 B. 2500- 100 HIC 800- 0 100 O C. o 100 Ау 2500- 800- 0 OC. 2500 1 800- 0 OC 2500- 800- 100 1000 0 100 Q 5 c) Use the regression feature of a calculator to find the best-fitting cubic function for the data. Give the first and the second coefficients to four decimal places, the third coefficient to the nearest hundredth, and the constant term to the neares y=(x³ + (x² + (x+0 Graph the function with the data. Choose the correct graph below. 100 00 E O D. Q 2500- 800+ OD. 2500- 800- OD. 2500- 0 800 100 0 100 100 2
d) Estimate the sight distance for a car traveling 67 mph using the functions from parts (b) and (c).
According to the linear model, the sight distance for a car traveling 67 mph is feet. (Round to the nearest foot.)
According to the cubic model, the sight distance for a car traveling 67 mph is feet. (Round to the nearest foot.)
e) By comparing the graphs of the functions in parts (b) and (c) with the data, decide which function best fits the given data.
O cubic function
O
linear function
Transcribed Image Text:d) Estimate the sight distance for a car traveling 67 mph using the functions from parts (b) and (c). According to the linear model, the sight distance for a car traveling 67 mph is feet. (Round to the nearest foot.) According to the cubic model, the sight distance for a car traveling 67 mph is feet. (Round to the nearest foot.) e) By comparing the graphs of the functions in parts (b) and (c) with the data, decide which function best fits the given data. O cubic function O linear function
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