In this problem we will find the Left Riemann Sum of f(x) = 3 + 2x over the interval [-1, 1] with n = 4 rectangles. Do NOT use fractions in your answers. The width of each rectangle (as a decimal) is The left endpoint values that we will be using are (from least to greatest) : a] = a2 E a3 = and a4 = f(a] ) = f(a2) = f(a3 ) = f(a4) = What is the value of the Left Riemann Sum using this information