Answer:
There is 2 apples
Step-by-step explanation:
There are 3060 ways the club send 4 students to the next debate if there are 18 students on the debate club.
<h3>What is permutation and combination?</h3>
A permutation is the number of different ways a set can be organized; order matters in permutations, but not in combinations.
We have the total number of students = 18
The number of ways the club send 4 students to the next debate is:
= C(18, 4)

= 3060
Thus, there are 3060 ways the club send 4 students to the next debate if there are 18 students on the debate club.
Learn more about permutation and combination here:
brainly.com/question/2295036
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Try x=0 (y=-4) the first one is wrong
try x=4 (y= 0). the last one is correct(ignore the first)
4th is correct
I think f^-1(x)= 3/28 + x/4