F (x) = 5x2 + 9x - 4
g(x) = -8x2 – 3x - 4
Find (f +g)(x).

He that is measured at 220° is a reflex angle. the opposite angle is obtuse. find the measure of obtuse .

Acourt reporter is transcribing an accident report from germany. the report states that the driver was traveling 80 kilometers per hour. how many miles per hour was the driver traveling?

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.