The accompanying graph shows curve XX"and tangents at points A, 8, and C Calculate the slope of the curve at these three points. 50 (12, 50) a' c' (16, 50) 40 30 (2. 10) 20 (26. 10) 10 X Graph for Problem 7 D 2 4 6 8 10 12 14 16 18 20 22 24 26 28 Instructions: Enter your answers as whole numbers. If you are entering a negative number, be sure to include a negative () sign in front of that number, The slope at: A=: B=