NASA launches a rocket at t=0 seconds. Its height, in meters above sea-level, in terms of time is given by h=-4.9t²+151t+423. How high is the rocket after 7 seconds?

Can i get some on 18,20,& 22? or one of them

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°?

Measure of angles 31 (x+4) (3x+9) me