Juan started his bank account with a $100 deposit and put in $38 a week. What is the formula for calculating how much money is in his bank account?

Step-by-step explanation:

We can model this as a linear equation where the money in his account is , the initial deposit is and the # of weeks is .

Then we set up equation as:

Where is how much money he puts in per week.

So putting in values we have:

Let J(x) = formula for calculating the amount of money Juan will have in the bank after a certain number of weeks.

J(x) = 100 + 38x

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