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Home > AC > Chapter 4 > Lesson 4.2.4 > Problem 4-100


The table below shows the amount of money Francis had in his bank account each day since he started his new job.

Days at New Job

Money in Account

  1. Write a rule for the amount of money in Francis's account. Let represent the number of days and represent the number of dollars in the account.

  1. When will Francis have more than in his account?

What was Francis' starting point, or ?

What is the growth each month, or ?

Substitute these values into the equation .

Which variable represents the amount of money?
Substitute for this variable in your rule.

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