Answer: -3x^2-3x+9
Step-by-step explanation:
-3(x^2+x-1)+12 = -3x^2-3x-3+12 = -3x^2-3x+9
The magnitude of the vector is

the component form is
<2,5>
Answer: 40$
Step-by-step explanation: before the mowing 20$ if half is on the game before game would be 40