Tickets for the historical review of ballroom dancing at the portsmouth music hall cost $42 for the main-floor seats and $25 for the balcony seats. let m represent the number of tickets sold for the main-floor seats and let b represent the number of tickets sold for the balcony seats. what is the algebraic expression for each of the following amounts?

(a) the cost in dollars of all the main-floor seats that were sold
(b) the total number of seats that were sold for the performance

Jamie is saving for a trip to europe. she has an existing savings account that earns 3 percent annual interest and has a current balance of $4,200. jamie doesn’t want to use her current savings for vacation, so she decides to borrow the $1,600 she needs for travel expenses. she will repay the loan in exactly one year. the annual interest rate is 6 percent. a. if jamie were to withdraw the $1,600 from her savings account to finance the trip, how much interest would she forgo? .b. if jamie borrows the $1,600 how much will she pay in interest? c. how much does the trip cost her if she borrows rather than dip into her savings?