Determine whether the parabola y = −x2 + 15x + 8 opens up, down, left, or right.

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°?

Aswimming pool measures 22ft by 12ft and is 4ft deep. if the pool is being filled at 2.5 cubic ft per minute, how long will it take to fill the pool?

Varies inversely with x. if y=8.5 when x=-1 find x when y=-1