144 feet. I'm pretty sure.
The coordinates of the point where the passenger was dropped of is the point (-2, 2).
(1, -2) + (3, -1) = ((1 + 3), (-2 - 1)) = (4, -3)
(4, -3) + (-6, 5) = ((4 - 6), (-3 + 5)) = (-2, 2)
As is the case for any polynomial, the domain of this one is (-infinity, +infinity).
To find the range, we need to determine the minimum value that f(x) can have. The coefficients here are a=2, b=6 and c = 2,
The x-coordinate of the vertex is x = -b/(2a), which here is x = -6/4 = -3/2.
Evaluate the function at x = 3/2 to find the y-coordinate of the vertex, which is also the smallest value the function can take on. That happens to be y = -5/2, so the range is [-5/2, infinity).
32
31.832142857 is what you got, look at your tenths digit. if it's greater or equal to 5, it will always round to the higher number. if its less than or equal to 4, it will be the lower number.
for example, 10.4 will be 10, as it is lower than 5
or 10.6 will be 11 cause it is higher than 5