Please help me!Consider the following graph

W B 2 10 20 30 40 50 60 70 (a) Draw the tangent line at each labeled point. y 5 A 3 B 3 2 B 2 O 10 20 30 40 50 60 X 70 O 10 20 30 40 50 X 60 70 B N B N O 10 20 30 40 50 60 70 10 20 30 40 50 X 60 70 (b) Estimate the slope at each labeled point. (Round your answer to three decimal places.)