A frisbee is thrown upward and and away from the top of a mountain that is $120$120 metres tall.
The height, $y$y, of the frisbee at time $x$x in seconds is given by the equation $y=-10x^2+40x+120$y=−10x2+40x+120.
This equation is graphed below.
What is the $y$y-value of the $y$y-intercept of this graph?
Which of the following descriptions corresponds to the value of the $x$x-intercept?
Given that the $x$x-value of the vertex is $2$2, what is the maximum height reached by the frisbee?