Jasper has invested an amount of money into a savings account. The graph below shows the value of his investment over a period of time. What is the rate of change for the interval [1, 3]?
[list=1] [*]Determine the interval to be observed. [*]Identify the starting point of the interval. [*]Identify the ending point of the interval. [*]Substitute the starting point and ending point into the slope formula to calculate the rate of change. [/list]