Answer:
The only one
Step-by-step explanation:
The one that is shown has a negative b^2-4ac value.
We know this because the function has no real roots -> that means that they must be complex, which can only occur if b^2-4ac < 0
(-4x^2 -6x -1) - (-x^2 -5x +3) = -3x^2 - x - 4
$3.85 per gallon is the price per gallon