-2x (5x-15) please answer

When you are making a circle graph by hand, how do you convert a number for a part into its corresponding angle measure in the circle graph? when you are making a circle graph by hand, what should you do if one of your angle measures is greater than 180°?

Which of the following is true for the relation f(x)=2x^2+1

How do i make someone brainliest? (if you answer me, i might be able to make you brainliest! )