Answer:
The opposite of 12 is <u>-12</u>.
Step-by-step explanation:
<u>-12</u>, -11, -10, -9, -8, -7, -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, <u>12</u>
All you have to do is do the negative version of that same original number.
Well $y =ax^2 + bx + c$, = -3. $/$
159mi/3hr = 53 mi/hr. Hope this helps