The 1st one is the right answer
Answer:

Step-by-step explanation:
1. 
2. 
3. b = 
Can't be simplified.
<span>D) perpendicular bisector <em>I believe.
</em></span>
Okay what you need I’ll help you with whatever
Answer:
Step one
Step-by-step explanation:
she forgot to do -4×-3 in the parentheses