More with Example Given Emily find u when C1 - 18, 22 - 22, 23 - 29, f - 5, f2 # 12, f3 - 7. Round to three decimal places. First, on your own paper, write out the formula using the value of n: fitfatfa Then, plug in the specific values using the formula and simplify: 18(5) +22(12) +29(7) 557 5+12+7 24 H = 23.208 Practice: Given A = Ef. Zail find a when 21 75, 22 - 88, f1 = 10, f2 2 What is n for this practice problem? What is the sum in the numerator? What is the sum in the denominator? Rounding the answer to one decimal place, find