A set of weights includes a 4lb and 6 pairs of weight plates. Each of plates weights 20lb. If x pairs of plates are added to the barbell , the total weight of the barbell and plates in pounds can be represented by f(x) =20x +4. What is the range of the function for this solution ?

The inside wheels of a car traveling on a circular path are rotating half as fast as the outside wheels. the front two wheels are six feet apart. what is the number of feet in the path traced by the inside front wheel in one trip around the circle? express your answer in the form "k \pi", where k is an integer.

If there is no real number solution to the quadratic equation x^2+2x+c=0 what is a possible value of c? 1 -2 0 3

Explain step-by-step how to simplify -5(2x – 3y + 6z – 10).