The kite is 105 feet in the air
6(x+9) = 7(x-4)
6x+54 = 7x-28
54 = x-28
82 = x
The number is 82.
Looks like the given function is

Recall that for |<em>x</em>| < 1, we have

We want the series to be centered around
, so first we rearrange <em>f(x)</em> :

Then

which converges for |(<em>x</em> - 4)/5| < 1, or -1 < <em>x</em> < 9.
I cant see the image very well. Could you explain your question?
time = -48/(2*-16) = 1.5 seconds
height = -16(1.5)^2+48(1.5)+6 = 42 ft