Answer:
14.8
Step-by-step explanation:
Answer:

Step-by-step explanation:

Bases iguales se suman

Answer:
B)
and C) 
Step-by-step explanation:
Once a linear function has a constant rate of change, you just have to find the linear functions. Also, the other ones are quadratic functions, and their graph are parabolas, which don't have a constant rate of change.
Considering 
has a constant positive rate of slope 2.

has a constant negative rate of slope -7

I could be wrong but is it $1.20?