An ice cream truck sells ice cream between 2 p. m. and 10 p. m. each night in the summer. at the end of the night, the driver calculates his profits and makes a graph to analyze the data. what is the average rate of change for the data from the 2nd hour to the 6th hour? be sure to include the correct units of measurement.
a scatter plot with x axis labeled hour and y axis labeled money earned in dollars per hour with points at 1 comma 54 and 2 comma 58 and 3 comma 64 and 4 comma 78 and 5 comma 96 and 6 comma 126 and 7 comma 99 and 8 comma 75
a. 17 hours
b. 68 dollars
c. 17 dollars per hour per hour
d. 68 dollars per hour per hour