Question 935928: The coast-down time y for a car as it drops 10 mph from an initial speed x depends on several factors, such as average drag, tire pressure, and whether the transmission is in neutral. The table gives coast-down time in seconds for a car under standard conditions for selected speeds.
Initial speed(in mph) 30, 35, 40, 45, 50, 55, 60, 65
Coast-down time(in seconds) 30, 26, 22, 19, 17, 15, 14, 13
Use a quadratic regression feature of a graphing calculator to find the quadratic function g that best fits the data.
g(x)=__x^2-__x+__
(Round to four decimal places as needed.)
Answer by Fombitz(32388)   (Show Source):
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