Answer:
C
Step-by-step explanation:
I'm pretty sure it's C
Answer:
Any real number.
Step-by-step explanation:
I dunno what you're asking, but Im assuming you need what a equals to.

The answer is any real number.
13r+23r=-2-1
36r=-3
r=-3/36
r=-1/12
Answer:
I think it could be modelled by the function I'm not 100 percent sure but i hope it helps
Step-by-step explanation: