The momentum of a 10,000kg train traveling east is 150,000 kg m/s east. What is the velocity? I just need the answer no work needed

Answer this question, only if you know the answer. 30 points and brainliest!

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.

How are algebraic expressions evaluated using substitution?