6x15 + 4x12 – 11x9 – 3x8 + 2x2 + 12.

Apublic library wants to place 4 magazines and 9 books on each display shelf. the expressions 4s +9s represents the total number of items that will be displayed on s shelves. simplify this expression

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left

What set does not contain -3 the set of all real numbers the set of all integers the set of all whole numbers the set of all rational numbers