A projectile has a height given by the function ht4.9t42 153,where time, t, is in seconds and the height, h, is in meters. What is the maximum height of the function and at what time does it reach that
height?

You can find the answer by using the formula t=-b/2a

Step-by-step explanation:

Remember the maximum height will be at the vertex. The x value of the vertex is your time, so use x=-b/2a except that t is your x. Then if it had also asked what the height was, you would plug that answer into your equation to find the y value of the vertex. Pretty sure your teacher is just asking you to find the x though:)

square root

step-by-step explanation:

1/4 because there is 4 grades.