Keith is saving money for a car. he has saved the same amount each year for the past three years, and records how much he has at the end of each year in the table below.

year 1: 1500 year 2: 3000 year 3: 4500

what is keith's unit rate of change of dollars with respect to time; that is, how much does keith save in one year?

Keith's unit rate of change of dollars with respect to time is $1500.

Step-by-step explanation:

It is given that Keith is saving money for a car.

Year 1: 1500

year 2: 3000

year 3: 4500

Let y be the saved amount after x year.

The coordinate pairs according to the given table are (1,1500), (2,3000) and (3,4500).

The formula for rate of change is

Consider any two coordinate pairs.

Let as consider (1,1500) and (2,3000). So, Keith's unit rate of change of dollars with respect to time is

Therefore, Keith's unit rate of change of dollars with respect to time is $1500.

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step-by-step explanation: