What are the vertex and axis of symmetry of the equation y=-2x^2 8x-18?

I'm being volume of cylinder with 13 in. radius and 30 in height answer choices in pic

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°?

Jacob signs up to work for 2 1/2 hours at the school carnival. if each work shift is 3/4 hour, how many shifts will jacob work? (i just want to double check : |, for anybody that responds! : )