Assume that when adults with smartphones are randomly selected, 56 % use them in meetings or classes. If 9 adult smartphone users are randomly selected, find the probability that at least 4 of them use their smartphones in meetings or classes what is the probability?

(- 1, 0 )

step-by-step explanation:

an x- intercept is where the function crosses the x- axis.

to find the x- intercept/s look for the value of x when f(x) = 0

from the given table there are 3 values of x where f(x) = 0

when x = - 1, x = 2, x = 3

the one that is listed is (- 1, 0 )

-2x + 7 = 7

subtract 7 from both sides.

-2x = 0

divide both sides by -2.

x = 0