a. Write the equation of the line that represents the linear approximation to the following function at the given point a. b. Use the linear approximation to estimate the given quantity. c. Compute the percent error in the approximation. 100. [approximation - exact) |exact where the exact value is given by a calculator. X f(x) = X + 2 : a= 1; f(1.3) a. L(X) = (Use integers or fractions for any numbers in the expression.) b. Using the linear approximation, f(1.3) ~ (Round to three decimal places as needed.) c. The percent error in the approximation is (Round to three decimal places as needed.)