Which of these system of linear equation has no solution

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.)

Solve the following inequalities and show the solution on a number line. 2x+3< 3(4x+5)

Petes dog weighed 30 pounds it then lost 16% of it's weight how much did pete lose