$42.35. 36/.85= 42.3529412
The equation of this parabola will have the form f(x) = a(x+5)(x-4), which works out to f(x) = a(x^2 + x - 20). Since the parabola passes thru (3,40),
40 = a(3^2 + 3 - 20), or 40 = a(-8), so a = -5.
Thus, the equation of this parabola is y = -5(x^2 + x - 20).
Answer:
k=5
Step-by-step explanation:
7
k
−
12
=
13
+
2
k
Move all terms containing
k
to the left side of the equation.