Which value is a solution of the equation 2-8x=-6 ?

a. 1

b. 1/2

c. -1

d. 8

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).

2y= 3 2 x−2 y = − 1 3 x + 1 y=− 3 1 x+1

In priyas math class there are 10 boys and 15 girls. what is the ratio of boys to girls in priyas math class? express your answer as a decimal