The population of Casselberry is expected to increase by 4% next year. If p represents Casselberry's population this year, which of the following expressions represents the
expected population next year?

One card is dealt from a 52 card deck. find the probability that the dealt card is a 4 or a black 7

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.

What is perpendicular to y=-1/2x+11