Assume that when adults with smartphones are randomly selected, 49% 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.

(- 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 )

hi! i think the answer is 1/2 : )