Question

amina opens a savings account. she starts her savings account with 20 dollars she got as a gift for her birthday. each week she adds 15 dollars to her account. this graph represents the amount in the account, y, after x weeks. how much money does amina have in her bank account after 4 weeks? amina has \boxed{} dollars in her bank account after 4 weeks.

Explanation:

Step1: Define the savings formula

The total savings $y$ follows the linear model: $y = 20 + 15x$, where 20 is the initial amount, 15 is the weekly deposit, and $x$ is the number of weeks.

Step2: Substitute $x=4$ into the formula

$y = 20 + 15\times4$

Step3: Calculate the total amount

$y = 20 + 60 = 80$

Answer:

80