Find the center of the circle whose equation is x² + y² = 4. a.(0, 0) b.(1, 1) c.(2, 2) the answer is not b or c can someone explain to me how to solve the problem and get a

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.