Idk how to do the formula can someone answer and explain how to do this kind of math. I am super confused and would love to learn how to do this myself

I have seen the formula but i dont understand

Jen spends $22 per week on donuts and coffee if she takes the same amount that she spends on donuts and coffee and adversity each week for the next five years at 3% compound weekly how much will she have in five years?

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