Let x = the number of nonzero digits in a randomly selected 4-digit pin that has no restriction on the digits. what are the possible values of x? 0, 1, 2, 3, 4 0, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4 0, 1, 2, 3

X = {0, 1, 2, 3, 4}

Step-by-step explanation:

If X is the number of nonzero digits in a 4-digit PIN with no restriction on the digits, the pin can have up to 4 nonzero digits.

Let's see some examples:

If the PIN is 0000 then X = 4

If the PIN is 2045 then X = 3

If the PIN is 7546 then X = 0

From the previous examples, we can see that the possible values for X are 0, 1, 2, 3, 4.

Thus X = {0, 1, 2, 3, 4}

  or  

step-by-step explanation:

if the four friends split the cost, p, of the pizza evenly, then each friend pays one-fourth of the cost of the pizza.

the expression is   or  

i got 10.28 but that rounds up to 10.3