4. Suppose that, in order to eat pretzels and drink beer, you need both time and money. Indeed, let the money price of a bag of pretzels be Pp = $.50 and the money price of a bottle of beer be Po = $1.00, and suppose you have $5.00 to spend. But you have only two hours in which to spend it, and it takes you 1/2 hour to eat a bag of pretzels and 15 minutes to down a brew. (a) Draw the two budget lines and tell me their slopes. (b) Suppose that you can buy and sell time for $2.00 an hour. That is, you can take some of your two hours and wash dishes, so that you have more cash to spend during the remaining time, or you can pay someone to take your washing job, and have more time to spend less cash. Draw up a new budget line in which you have combined your money and time resources, where you start from $5.00 and add what you earn or deduct what you spend, and in which time costs have a money value