Answer:

Step-by-step explanation:
given equation

subtracting 17 from both sides

the solution for quadratic equation
is given by
x = 
________________________________
in our problem
a = 1
b = 2
c = -16

thus value of x is

Answer:
82
Step-by-step explanation:
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X= -4; f(x)= -15
X= 2; f(x)= 3
X=5; f(x)= 12
Here, Function: h(t)= -16t² + 70t + 40
So, put the value of t, (time at which you want to calculate the height)
h(1) = -16(1)² + 70(1) + 40
h(1) = -16 + 110
h(1) = 94
Now, h(2) = -16(2)² + 70(2) + 40
h(2) = -64 + 180
h(2) = 116
h(3) = -16(3)² + 70(3) + 40
h(3) = -144 + 250
h(3) = 106
In short, Your height depends on time, and at each time it would be different, can be expressed by the coordinates on a Graph: (1, 94) (2, 116) (3, 106)
Hope this helps!