Answer:
Do not retake the quiz that's almost an A.
First looks more bell than anything, second, there are 18-time trials, third, I'm not completely sure.
Answer: m=n=3
Step-by-step explanation:
Reflecting across the y=0, in other words, the x-axis, means

So, 
This gives us the system

I’m going to go with 77 i’m pretty sure