Answer:
x = -8
Step-by-step explanation:
The axis of symmetry can be found using the formula:
x = -b/2a
This applies to the standard form equation f(x) = ax^2+bx+c.
Since f(x) = 3x² + 48x + 20; a = 3, b = 48, and c = 20.
Substituting the variables we get:
x = -(48) / 2(3)
x = -48 / 6
x = -8
Therefore, the axis of symmetry is located at x = -8
