Find the average rate of change of g ( x ) = 5 x 3 + 4 from x = − 1 to x = 3

Triangles abc and dfg are given. find the lengths of all other sides of these triangles if: b ∠a≅∠d, ab·dg=ac·df, ac=7 cm, bc=15 cm, fg=20 cm, and df-ab=3 cm.