Functions can only have 1 value of 'x'.
Option A is not a function because it has two -5's
Option B is not a function because it has two -2's.
Option C is a function.
Option D is not a function because it has two 6's.
Answer:
The probability that she chooses a nuumber less than 4 is 30%
Step-by-step explanation:
The expected value formula is

We know that there are 125 tickets, so the probability of the ticket is

Then, we find the expected value

<h2>Hence, the expected value is $7.60.</h2>