Complete the work to simplify the algebraic expression 3s2 + 11s − s2 − 4 − 5s + 7. Identify like terms: 3s2 and −s2 11s and −5s −4 and 7 Combine like terms: 3s2 + −s2 = 2s2 11s + −5s = 6s −4 + 7 = 3 Simplified expression:

Use the frequency distribution, which shows the number of american voters (in millions) according to age, to find the probability that a voter chosen at random is in the 18 to 20 years old age range. ages frequency 18 to 20 5.9 21 to 24 7.7 25 to 34 20.4 35 to 44 25.1 45 to 64 54.4 65 and over 27.7 the probability that a voter chosen at random is in the 18 to 20 years old age range is nothing. (round to three decimal places as needed.)