What is the area of the circle of 30? (Use 3.14 as an approximation of pi.)

One of the same side angles of two parallel lines is 20° smaller than the other one. find the measures of these two angles.

In a graph with several intervals o data how does a constant interval appear? what type of scenario produces a constant interval?

Parabolas y=−2x^2 and y=2x^2 +k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.