Suppose you receive $100 for a graduation present -> then, the initial value in the account is $100
Then each week thereafter, you add $5 to the account but no interest is earned. -> then, after 1 week you will have 100+5 = $105 .
after 2 weeks, you will have 105 + 5 = $110
and so on
this means that the variables are
Y = The amount in the account
X = the number of weeks that have passed
and the function that models this situation is:
