Question

Oliwia is opening a bank account. She learns that there is a special promotion where if she deposits $3,000 and then makes no additional deposits or withdrawals, her account will earn $3 in interest per month. Write the equation of a linear function that models the relationship between number of months and total amount of money Oliwia will have in her account

Answer 1

Let m = number of months. The total amount A (in dollars) is
A(m) = 3000 + 3m.

(Intercept 3000 is the initial deposit; slope 3 is dollars earned per month. Domain: m ≥ 0, typically m an integer.)