Mathematics, 30.08.2021 19:10, veronica022
If the temperature outside is 86°F, the heat index can be found using the equation y = 0.004x2 − 0.1243x + 84.028. This equation is also the curve of best fit for the values in the table. In the equation, x represents the relative humidity and y represents the heat index.
Relative Humidity Heat Index
40% 85°F
55% 89°F
75% 97°F
90% 105°F
100% 112°F
Using the curve of best fit, if the current temperature is 86°F and the relative humidity is 55%, what is the heat index? Round the answer to the nearest degree.
A.
78°F
B.
88°F
C.
89°F
D.
90°F
Answers: 2
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