5. suppose you buy a $1999 lcd tv on layaway. if you pay 5% down and make $50 payments every week, how many weeks will it be before you pay off the tv?

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.