At the shopping mall, Joaquin bought 4 pretzels and 2 bottles of water for $13.00. Kelly bought 3 pretzels and a bottle of water for $9.00. What is the price of a bottle of water? A bag of pretzels?

The architect's side view drawing of a saltbox-style house shows a post that supports the roof ridge. the support post is 8 ft tall. the distance from the front of the house to the support post is less than the distance from the post to the back of the house. how far from the front of the house is the support post positioned?