U/2=1.65. U=?

I am trying to learn this?

Jayda's house is located at (1, 5). she can walk in a straight line to get to cristian's house. a fast-food restaurant is located at (11, 0) and partitions the way from jayda's house to cristian's house by a ratio of 5: 1. find the coordinate of cristian's house. me . im a little stuck

If a baby uses 15 diapers in 2 days, how many diapers will the baby use in a year?

Add the fractions, and simply the result to lowest terms. 2/3 + 2/7= ?