When rocket hit the ground the height of rocket from the ground is 0. So y = 0, when rocket hit the ground.
Simplify the equation -16x^2+248x+116 = 0 by using quadratic formula to obtain the value ot time, x.
The negative value of time is neglected as time can never be negative.
Thus time at which rocket hit the ground is 15.95 seconds.
Unfortunately, there are no two such numbers.
If your original question was:
and you were trying to factor it, I would suggest the quadratic formula.
There are two solutions to
, where
<span>, and we can find them by using the quadratic formula:
</span>
So using that, here is how it would get factored:
For your equation,
Plug in those values into the formula:
Simplifying it:
And so the solutions are:
and
B. 8 gallons
find slope (rise over run) 40gallns / 5minutes = 8gallons / 1minute