Answer:
area of trapazoid= 1/2 × b× h
so = 1/2×9×15
=1/2×135
=67.5cm
Substituting -3 for x, we have: (-3)^2-3*-3-7. This simplifies to 9+9-7, or 11.
Answer:
i think its C)
Step-by-step explanation:
Answer:

Step-by-step explanation:
You are correct down to the part where you add the partial results:
