Question

I need some help with this practice test if you don't mind

Answer 1

where is it?

Answer 2

Find the maximum height of the ball, given that the path of the ball is y = \[-\frac{ 1 }{ 20 }x ^{2} + 3x + 5\]

Answer 3

what are your thoughts?

Answer 4

I'm thinking that it's the vertex which is -b/2a I think so -3/(-1/20 *2) = 30?

Answer 5

you are correct, it is the y value of the vertex

Answer 6

when x = 30, the y value gives our highest point

Answer 7

so, what is the value of y when x=30?

Answer 8

50!

Answer 9

correct

Answer 10

That was a lot easier than I thought, thank you!

Answer 11

youre welcome