He sells it at $80 which gives him a profit of $5!
Answer:

Step-by-step explanation:
The given function is

To find g(n-7), we substitute x=n-7 to obtain;

Expand the parenthesis to obtain;

Simplify:

Answer: The answer is C
Step-by-step explanation:
The Circumference would be 1256.637 and the diameter would be 400
Answer:

Step-by-step explanation:
655*655 is pretty much equal to 655²
the square root of a number to the power of 2 is equal to the number without the power
so √655² would be equal to 655