3. Elena is paid a constant rate for each hour she works. The table shows the amounts of money that Elena earned for various amounts of time that she worked.
Time (hours)
Amount Earned
(dollars)
2.5
22.50
3
27
3.5
31.50
4.5
40.50
a. Determine the average rate of change for the problem situation Be sure to include units
of measure
b. Write a function that models the table of values Define your variables
c. Determine the amount of money Elena earns if she works 7.5 hours.