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

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?$What was the starting amount of money in the account?$

How much money would you need to deposit today at 9% annual interestcompounded monthly to have $12000 in the account after 6 years?

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.

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.

Question 2Suppose a principal of $500 is placed in a bank account paying interest of 6% p.a. compoundedweekly. If no money is withdrawn from the account, how long (in weeks) will it take for theaccount balance to reach $700?Note: round your answer to the nearest whole number.