For the function f, f'(x)= 2x+1 and f(1)=4. what is the approximation for f(1.2) found by using the line tangent to the graph of f at x=1?

In the diagram, the measure of angle 9 is 85° which angle must also measure 85°?

F(x)= 1/x-4, g(x)=4x+1/x a. use composition to prove whether or not the functions are inverses of each other. b. express the domain of the compositions using interval notation.

Which approach to the theory-and-research cycle does the following sequence reflect: (1) specific observations suggest generalizations, (2) generalizations produce a tentative theory, (3) the theory is tested through the formation of hypotheses, and (4) hypotheses may provide suggestions for additional observations?