The n^th term of a sequence is given by an=n2−1

if the domain of the sequence is {1,2,3,4,5} choose the value that is not in the range of the sequence from the choices below:

a) 24

b) 0

c) 4

d) 3

Determine the mean and variance of the random variable with the following probability mass function. f(x)=( 729divided by 91) (1 divided by 9) superscript x baseline comma x equals 1,2,3 round your answers to three decimal places (e. g. 98.765).

What is the expression in factored form? -x^2 + 3x + 28 a. (x-7)(x-4) b. -(x-7)(x+4) c. (x+4)(x+7) d. -(x-4)(x+7)

Use the elimination method to solve the systems of equations. choose the correct ordered pair. 7x+4y=39