B. In how many games did Katy play catcher?
Is this right

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

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

How do i do this? i don’t understand