Answer:
G. 78.5 / π
{ i hope this helps :) i'm sorry if its wrong }
The way it is written, none of them.

The "a"s cancel out.
Means the number you can use
remember we can't divide by zero
domain is x^2-9
set to zero to find values we can't use
x^2-9=0
x^2=9
x=+/-3
domain=all real numbers except -3 and 3
You are correct. The answer is B.) They are congruent because they are corresponding angles.
Nice job! Hope this helped :)
B is your answer! All you do for this equation is go oh look m=2/7 well this means y=2/7x and you have a -12 so than you just plug it in. To get y=2/7x-12