The answer to the first B one is horizontal translation 1 to the right because the -1 is inside the quantity.
2nd g(x)=3x^2+8
(f+g) means add the expressions together. combine like terms.


there is no other constant term so the -4 stays as is.
The standard formula for the circumference (C) of a circle in terms of its diameter (d) is ...
... C = π·d