The height h (in feet) of a falling object above the ground at time tin
seconds) is modeled by h = kg – 167", where "o is the initial height. Find
the time (in seconds) it takes for an object to fall to the ground if the
initial height is 630 feet. Round your answer to two decimal places.

What is the slope of the line shown below?

8. kelly wants to buy a magazine that is $25. later the magazine was marked up an additional 20%. what is the new price?

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.