Is 4 + 15x = 49 true? How do you know?

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

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

Which statement best explains why ben uses the width hi to create the arc at j from point k