Which is the correct algebraic expression
please help image attached I'll give brainliest

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

Find the solution of this system of equation -7x+y=-20 9x-3y=36

15m is what percent of 60m; 3m; 30m; 1.5 km? the last one is km not m