Miguel is putting money into a checking account. Let y represent the total amount of money in the account (in dollars). Let x represent the number of weeks Miguel has been adding money. Suppose that y and x are related by the equation 30x+350+y.
Answer the questions below.
Note that a change can be an increase or a decrease.
For an increase, use a positive number. For a decrease, use a negative number.
What is the change per week in the amount of money in the account?
What was the starting amount of money in the account?
The change per week in the amount of money in the account can be found by looking at the coefficient of the x term in the equation. In this case, the coefficient is 30, so the change per week is $30.
The starting amount of money in the account can be found by looking at the constant term in the equation. In this case, the constant term is 350, so the starting amount of money in the account was $350.