The revenue from a bicycle company’s factory in San Diego, CA is given by

4b2-20b+14, where b represents the number of bicycles produced in the factory. The cost in dollars of producing bicycles is given by b2+18b+30. Write and simplify a polynomial expression for the profit from making and selling b bicycles.

pay attention in your classes and concentrate the best thing you can do to raise your test scores is to pay attention when you're supposed to be learning the material: in class!

take good notes.

do your homework.

use mnemonics and other tricks.

do practice tests.

note: the best i know.

the formula for the equation of a circle is (x – h)2+ (y – k)2 = r2, where (h, k) represents the coordinates of the center of the circle, and r represents the radius of the circle. if a circle is tangent to the x-axis at (3,0), this means it touches the x-axis at that point.