A tailor stitches 2 shirts everyday. It takes him 2 hours to stitch a shirt. Each shirt uses 7 buttons and has two pockets. Each shirt costs the tailor $ 3 and he charges the customer $ 5. 1. How many pockets does the tailor stitch in 3 days?   2. How many buttons does the tailor use in 3 days?   3. How many dollars does the tailor collect from his customers in 3 days?   4. How many dollars does the tailor earn as profit in 3 days?   5. How many hours does the tailor work in 3 days?