The quadratic formula is -b plus minus the square root of b^2-4ac all over 2a.
Here, a=1, b=13, and c=30.
The only option that fills in the values correctly is D
8.006
-6.38 = 1.626
Hope this help
Answer: -3x-1
Step-by-step explanation: 2x-4-5x+3 collect the terms
-3x-4+3
answer -3x-1
2.091 rounded to 1 decimal point is 2.1
Answer: 2) Plant C is producing at a cost greater than the goal.