Using simple interest, it is found that Callie will save $157.32 if she is able to raise your credit score from 700 to 800.
Simple Interest
The amount of interest after t years in simple interest is modeled by:
[tex]I = Prt[/tex]
In which:
- r is the interest rate, as a decimal.
In this problem:
- She plans to borrow $4,100.00 with a simple interest rate loan, hence [tex]P = 4100[/tex].
- One year, hence [tex]t = 1[/tex].
With a credit score of 700, the rate is of [tex]r = 0.08132[/tex], hence:
[tex]I = 4100(0.08132) = 333.41[/tex]
With a credit score of 800, the rate is of [tex]r = 0.04295[/tex], hence:
[tex]I = 4100(0.04295) = 176.09[/tex]
Then, the amount saved is:
[tex]333.41 - 176.09 = 157.32[/tex]
Callie will save $157.32 if she is able to raise your credit score from 700 to 800.
To learn more about simple interest, you can take a look at https://brainly.com/question/25296782