a) For the function y= 3x2+ 2x, use a simplified algebraic expression in terms of a and b to estimate the slope of the tangent at each of the following x-values, when b =0.1, b=0.01, and b =0.001. 1) a=2 a=-3 b) Determine the equation of the tangent at the above x-values. () Graph the curve and tangents