Question

A college student is looking at her monthly checking account records. On September 1, 2008, her checking account held a balance of $1,050. At the end of March 2009, her checking account held a balance of $800. What is the monthly rate of change for the student’s checking account over the period September 1, 2008 through March 31, 2009?

Answer 1

The said problem is asking to calculate the monthly rate of change for the student's checking account over the period September 1,2008 through March 31, 2009, and in my further calculation, I would say that the answer would be B.−250/7. I hope you are satisfied with my answer.

Answer 2

The monthly rate of change for the student’s checking account over the period September 1, 2008 through March 31, 2009 is -35.71.

Explanation:

It is given that a on September 1, 2008, her account balance is $1,050. At the end of March 2009, her account balance is $800.

The number of months between September 1, 2008 to end of March 2009 is 7.

The monthly rate of change for the student’s checking account over the period September 1, 2008 through March 31, 2009 is

`m=(800-1050)/(7)`

`m=(-250)/(7)`

`m=-35.7142857143`

`m\approx -35.71`

Therefore the monthly rate of change for the student’s checking account over the period September 1, 2008 through March 31, 2009 is -35.71.