Jill buys two circular pizzas. The small pizza has an 8-inch diameter.
The medium pizza has
a 12-inch diameter. How much greater, in square inches, is the area of the medium pizza than the small pizza?

Marla bought a book for $12.95, a binder for $3.49, and a backpack for $44.99. the sales tax rate is 6%. find the amount of tax and the total she paid for these items

F(x) = 1/x g(x)=x-4 can you evaluate (g*f)(0) ? why or why not?

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.