You can put this solution on YOUR website!
I am assuming that you mean
. You can do this either algebraically or graphically. To do it algebraically, you need to realize that the graph is a paraola that opens down. The vertex of the parabola
always occurs at
In this problem a=-16, b=48, and c= 4, the vertex occurs at
To find the maximum height, substitute x=1.5 into the formula
(Got a calculator???
Graphically, it is even easier. Just draw the graph
, and find the vertex by calculator methods. The x coordinate of the vertex is the time it takes to get there, and the y coordinate of the vertex is the highest point.
R^2 at SCC