Answer:
A.
Step-by-step explanation:
Distributive property means (in this case) to multiply what's inside the () by what's outside the (). Therefore, I believe A is the only one that makes sense.
Hope this helps!
Answer: it is (-2) because rise over run
B. 17
The average rate of change is:
m_avg = (y₂ − y₁) / (x₂ − x₁)
m_avg = (100 − 49) / (10 − 7)
m_avg = 17