If n is a positive integer then the expression i^4n+2 is always equivalent to -1. explain why.

If a baby uses 15 diapers in 2 days, how many diapers will the baby use in a year?

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.)

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.