Answer:
B
Step-by-step explanation:
When you flip over the y-axis you the x is multiplied by -1
Seven, I think. That's what I found somewhere else.
Answer:

Step-by-step explanation:
Subtract the right side of the given equation to put it into standard form:
4x² +8x -221 = 0
Then the coefficients used in the quadratic formula are ...
When these are filled into the form ...

the result is as shown above.
60,000 is divisible by both 4 and 6
Once you start working problems like these, it pays to get an appropriate calculator.
.. (x, y, z) ≈ (248.01, 43.63, 88.34) . . . . rounded to 2 decimal places
_____
The attempt to convert these to fractions with denominators less than 9999 failed.