Jenny has a bookcase with 3 shelves. There are K books on each shelf. Using K, write an expression for the total number of books.

How many real and imaginary solutions does the equation x^2-3x=-2x-7 have?

The roots of the function f(x) = x2 – 2x – 3 are shown. what is the missing number?

Aweekly newspaper charges $72 for each inch in length and one column width. what is the cost of an ad that runs 2 column inches long and 2 columns wide? its not 288