Answer:
21
Step-by-step explanation:
(9x2 + 6x – 7) + (-9x - 5) = 21
Answer:
D. x^2 +14x + 40
Step-by-step explanation:
(x+4)(x+10)
x^2+10x+4x+40
x^2+14x+40
Answer:


Step-by-step explanation:
Write the system


Solve by Elimination.
multiply the second equation by -3.


Add the Equations.


Plug this back in one of the equations.


Answer:
yes I think so
Step-by-step explanation: