Mary 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 mary has been adding money. suppose that x and y are related by the equation =+75030xy . 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 the account?

what was the starting amount money in the account?