Emerson has $120. Each week he saves an additional $15. Write a function f(x) that models the total amount

of money Emerson has after x weeks.

of money Emerson has after x weeks.

- has $120
- adds $15 each week
- f(x) is total amount after x weeks

Since Emerson is adding 15x to the $120 that he currently has, then:

**f(x) = 120 + 15x**{total, f(x), equals adding 15 per week to the original 120}

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