We know f(x)=5x+1. Plug in f(x) in the g(x) function.
We get

Distribute the 2 to 5x and 1.

Simplify to get

Now, we plug in -1 for x.


For this case, we have that by definition, the circumference of a circle is given by:

Where:
d: Is the diameter of the circle given by 2r, that is, twice the radius.
If we have a circle with a diameter equal to 8cm, then the circumference is given by:

ANswer:
Option C

Could you please send a picture of the polygon?
Answer:
6/4
Step-by-step explanation: