The principal is collecting data to determine how many graduation tickets will be needed by students at the next graduation. she randomly asks 3 students from mr. winking's class which has 16 students in it. how many different groups of 3 does the principal have to pick from?
group of answer choices

560

3360

4096

2.0923 * 10^{13}

560

Step-by-step explanation:

The number of ways to choose r objects from n total objects is given by the combination formula:

Where n is the total and r is how many we are choosing

Also note: n! = n * (n-1) * (n-2) * ...

So n = 16 and r = 3, so we have:

hence, there would be 560 different groups of 3

b. f(x) = –√x + 3this is the correct answer