In Problems 1-4,
(A) Calculate the change in F(x) from x = 10 to x = 15.
(B) Graph F'(x) and use geometric formulas (see Appendix C) to calculate the area between the graph of F'(x) and the x = axis from x = 10 to x = 15.
(C) Verify that your answers to (A) and (B) are equal, as is guar- anteed by the fundamental theorem of calculus.
a. F (x) = 9x + 120
b. F(x) = x2 + 30x + 210