PLSS HELP ME WITH THIS AND PUT A EXPLANATION TOO PLSS I NEED A REASON PLS

In the following situation, determine whether you are asked to determine the number of permutations or combinations. then do the calculation how many ways are there to pick a starting five from a basketball team of twelve members? a. permutation; ps - 2520 b. combination; 1c, - 792 c. combination: 2cs - 2520 d. permutation; ps - 95040

Write 5(6x+4)-2(5x-2) in the form a(bx+c) where a,b and c integers and a> 1

In a singing competition, there are 150 participants. at the end of each round, 40% of the participants are eliminated. how many participants are left after n rounds?