When an atom emits radiation, #"A."# a new element is always formed #"B."# the mass number of the atom decreases #"C."# the weight of the atom decrease to half its value in a fixed time #"D."# the radiation always comes from the nucleus?

↳Redirected from "Suppose that I don't have a formula for #g(x)# but I know that #g(1) = 3# and #g'(x) = sqrt(x^2+15)# for all x. How do I use a linear approximation to estimate #g(0.9)# and #g(1.1)#?"