Help I don’t get this

Suppose the radius of a circle is 16. what issuppose the radius of a circle is 16. what is its circumference its circumference

If f(x) = 6x – 4, what is f(x) when x = 8? a2 b16 c44 d52

The equation represents the function f, and the graph represents the function g. f(x)=3(5/2)^x determine the relationship between the growth factors of f and g. a. the growth factor of g is twice the growth factor of f. b. the growth factor of f is twice the growth factor of g. c. the growth factor of f is 2.5 times the growth factor of g. d. the growth factor of f is the same as the growth factor of g.