Robin’s bank account has $1,876. Every month she withdraws $30 for her phone payment.

Question

Create an equation to describe how much money she will have after a certain amount of months. Write the equation for this problem in function notation. Then interpret how much money Robin will have after 6 months of payments. Make sure to define your variables and show all of your work.

Answer 1

M = 1876 - 30n  will give the amount of Money (M) remaining after n months of withdrawing exactly $30 per month, PROVIDED NOTHING ELSE IS EVER ADDED TO OR WITHDRAWN FROM THE ACCOUNT.  (Not very realistic.)

 

Use n=6 to provide the balance after 6 months.