. Find the best fit of the data sets below using log or semilog (whichever works best) and from that fit produce the equation in the form y = f(x). Using the R lm function and plotting will be helpful. a) x = [0, 1, 2, 3, 4] y = [0, 0.45, 2.8, 7.9, 15.5] b) x = [0, 1, 2, 3, 4] y = [0.55, 1.20, 3.3, 7.8, 19.6] c) x = [1, 2, 3, 4, 5] y = [0, 1.04, 1.65, 2.08, 2.40]