Linear Functions Fit to Data MC)

The table compares the average daily temperature and ice cream sales each day.


Temperature (°F) Ice Cream Sales
58.2 $112
64.2 $135
64.3 $138
66.8 $146
68.4 $166
71.6 $180
72.7 $188
76.2 $199
77.8 $220
82.8 $280


Using technology, determine the line of fit, where x represents the average daily temperature and y represents the total ice cream sales. Round values to the nearest tenth.
ŷ = 3.8x − 109.2
ŷ = −3.8xx − 109.2
ŷ = 6.5x − 279.1
ŷ = −6.5x − 279.1