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Mathematics

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Using a graphing calculator and quadratic regression to find a model:
A study compared the speed x, in miles per hour and the average fuel economy y (in miles
per gallon) for cars. The results are shown in the table. Find a quadratic model in standard
form for the data.
Speed x
Fuel
Economy y
15 20
25.5
22.3
What is the line of best fit for this table?
25 30 35 40 45 50 55
27.5 29 28.8 30 29.9
60 65 70
30.2 30.4 28.8 27.4 25.3
ow much fuel would you use if you went 42mph?

Answer :

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