Write the function as a composition of two functions. 1 2 y: (x2+4x) 7 7(x2+4x)T +2 Choose the correct answer below. 1 If f(X) =x7 7x7 + 2 and g(x) =x2 +4x, then y=f[g(x)]. i 2 V If f(x) = x2 + 4x and 900 = x7 7x7 + 2, then y = f[g(x)]. l E If f(X) = 4x7 28x7 + 2 and g(x) = x2, then y = f[g(x)]. If f(x) = x7 7x2 + 2 and g(x) = x2 + 4x, then y = f[g(x)]. Find the derivative. f(x) = 417x2+9 28x f' ( x ) = N - (7x2 + 9)Find the equation of the tangent line to the graph of the given function at the given value of x. f(x) = Vx + 11 ; x=5 5x 11 y = + 6 (Type an expression using x as the variable.)To test an individual's use of a certain mineral, a researcher injects a small amount of a radioactive form of that mineral into the person's bloodstream. The mineral remaining in the bloodstream is measured each day for several days. Suppose the amount of the mineral remaining in the bloodstream (in milligrams per cubic centimeter) t days after the 1 initial injection is approximated by C(t) = -(2t+ 2) . Find the rate of change of the mineral level with respect to time for 4 days. . . . The rate of change of the mineral level with respect to time for 4 days is approximately - 0.02 milligrams per cubic centimeter per day. (Round to two decimal places as needed.)