Find the Average Rate of Change of the Function From x

Multiple Choice

Find the average rate of change of the function from $$x _ { 1 } \text { to } x _ { 2 }$$
-Along with incomes, people's charitable contributions have steadily increased over the past few years. The table below shows the average deduction for charitable contributions reported on individual income tax returns for the period 1993 to 1998. Find the average annual increase between 1995 and 1997.

A) $\$ 275$ per year
B) $\$ 550$ per year
C) \$325 per year
D) $\$ 290$ per year