10. For the function f (x ) = 5x2 - 4 a) find the simplified expression of the slope of the secant line between the points that have given x-coordinates: x = -2 and x = -2 + h b) use your answer from part a) to find the slope of the tangent at point x = -2 c) find the equation of the tangent at point x = -281 11. Evaluate the following: 10g 6 27 BONUS: 2f(x) -3f - = x2 If X , find f(-4)