I NEED HELP ASAP:( Use the commutative or associative property to simplify the expression.
-1/7(9x)

What is the perimeter of square abcd? units units 28 units 37 units

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.)

Evaluate the expression. (9 + 5)(3 + 2)0