The formula is in a quadratic formula shape: 
The function is negative since the value 'a' the coefficient of x^2 is negative meaning that the quadratic function is facing downards. If you don't get this explanation, take a look at the diagram I uploaded.
That means the highest point of the graph is its vertex.
But we must find where the vertex is at or the 't' value.
't' value at which vertex is = 
Now plug this 't' value into h(t) to find the maximum height, and we will get 36 feet.
Hope that helps!
I think it is 6 I hope you get it right good luck but I think that is the answer but it should be 6
Answer:
Step-by-step explanation:
y+5=0
y=-5
it is a line down 5 units parallel to x-axis.
you can take infinie points say (1,-5),(5,-5) ,(7,-5) etc.
1. 13
2. 9 or 38 not really sure
3.1595
4.. 810
Answer:
(-12,2)
Step-by-step explanation:
2x + 4y = -16
2y - x = 16
Multiply the bottom part by 2.
2x + 4y = -16
4y - 2x = 32
Add the equations and the answers to the equations up, and they will equal each other.
(2x + 4y) + (4y - 2x) = -16 + 32
8y = 16
y = 2
Plug y = 2 to the 2nd equation.
2*2 - x = 16
4 - x = 16
Subtract 4 from both sides.
-x = 12
Multiply both sides by -1.
x = -12
