The discrete random variable B has probability distribution function given by

P(B= b) = k14 - b) for b=0, 1, 2, 3.

Find k and E(B)

What is the slope of a line that is perpendicular to y = 3x + 1

What is f(3) for the quadratic functionf(x)=2x2 + x – 12? f -3g 3h 6i. 9

Afarm that has 4 x 10^2 acres has 1.2 x 10^5 cattle. what is the average number of cattle per acre? write the answer in scientific notation. answere asap