Situation: A farmer in China discovers a mammal
hide that contains 73% of its original
amount of C-14.
N = Noekt
No - inital amount of C-14 (at time
t = 0)
N-amount of C-14 at time t
k = 0.0001
t = time, in years

Heather is writing a quadratic function that represents a parabola that touches but does not cross the x-axis at x = -6. which function could heather be writing? fx) = x2 + 36x + 12 = x2 - 36x - 12 f(x) = -x + 12x + 36 f(x) = -x? - 12x - 36