Answer:
option D
Explanation:
the values of x are where the graph meets the x-axis.
both values of x are found, in this case, using the quadratic formula,
x = ((-b ± √(b² - 4ac)) ÷ 2a)
our equation is y = 3x² + 5x + 1.
so -5 is -b, b² is (-5)² = +25.
4ac = 4(3)(1) = 12.
√(b² - 4ac) = √(25 - 12) = √13.
2a = 2(3) = 6.
inputting the given equations of x, we get answers of -0.2 and -1.4.
option D is what we want.