2/9 - 1/5 * x equivalent expression please and maybe steps to help show how u did it

Translate the word phrase into a math expression. 15 fewer than the product of 4 and a number. (pls immediately)

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.)

Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?