There are 20 players on a soccer team. From them, a captain and an alternate captain have to be chosen. How many possibilities are there?

The number of possibilities = 380

Step-by-step explanation:

Given, There are 20 players on a soccer team. From them, a captain and an alternate captain have to be chosen.

Since, captain and alternate captain comes in order.

Number of ways to choose r things out of n things (when order matters) :

Number of ways to choose 2 players ( for  captain and alternate captain ) from 20 players :

Hence, the number of possibilities = 380

since we know that the two functions are equal, f (x) = g

(x), therefore when we equate the two equations the result should be similar to

3x = x – 4:

a. f(x) = 3x, g(x) = x – 4

equating the two functions:

3x = x – 4             (correct)

so we now got our answer (a)