Lamar 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 Lamar has been adding money. Suppose that x and y are related by the equation =+35020xy.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?$What was the starting amount of money in the account?$

Ann 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 Ann has been adding money. Suppose that x and y are related by the equation =+55020xy.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.

Let y represent the total cost of publishing a book (in dollars). Let x represent the number of copies of the book printed. Suppose that x and y are related by the equation =y+125025x.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 in the total cost for each book printed?$What is the cost to get started (before any books are printed)?$

Ivan is putting money into a savings account. He starts with $350 in the savings account, and each week he adds $60.Let S represent the total amount of money in the savings account (in dollars), and let W represent the number of weeks Ivan has been adding money. Write an equation relating S to W. Then use this equation to find the total amount of money in the savings account after 13 weeks.

What is the change per week in the amount of money in the account?$What was the starting amount of money in the account?

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.(a)Jenny owns 9 shares of a certain stock. Yesterday the total value of her shares went down by 90 dollars. What was the change in value for each share?dollars(b)A private club grew by 7 members each week for 21 weeks. What was the total change in the club's size?members