Answer:9
Step-by-step explanation:
She didn't make any mistake
Answer:
C
Step-by-step explanation:
the domain is the set of numbers that can be x values. in this case, the equation is linear so any number you plug in for x will give you a y value
So you need to turn 5x^2 -3x -9 into 2x - 3.
Well first you need to take 5x^2 out by subtracting 5x^2 (-5x^2).
Then -3x needs to become 2x by adding 5x (+5x).
Finally -9 needs to become -3 by adding 6 (+6).
Put all the things you did together to make a polynomial.
-5x^2 + 5x + 6
