A function can't have two X values that are the same (If I remember correctly) and the second table is the only one that doesn't have duplicated X values
104 / 169 = x / 224.25......104 lbs to 169 mg = x lbs to 224.25 mg cross multiply because this is a proportion (169)(x) = (104)(224.25) 169x = 23322 x = 23322 / 169 x = 138 lbs <==
