Answer:
1.79438504
Step-by-step explanation:
3x+4=16
3x=16-4
3x=12
x=4
The greater the magnitude of the leading coefficient, the narrower the parabola.
Widest: f(x) = 0.5x²
Next: f(x) = -x²
Next: f(x) = 2x²
Narrowest: 3x²