Which is the better deal? question 2 options: 1 lb of apples for $2.50 3 lbs of apples for $4.25 5 lbs of apples for $7.20 10 lbs of apples for $15.00

If there is 20 dogs in the shelter and 5 dogs get homes, and then 43 more dogs come. how many dogs are there in the shelter?

Set $r$ is a set of rectangles such that (1) only the grid points shown here are used as vertices, (2) all sides are vertical or horizontal and (3) no two rectangles in the set are congruent. if $r$ contains the maximum possible number of rectangles given these conditions, what fraction of the rectangles in set $r$ are squares? express your answer as a common fraction.

286 divided by 457.6 what is the quotient?