How do I find z-score for this problem?

Question

1. Suppose X ~ N(−1, 2). What's the z-score of x = 10?

I need help solving for Z,

Answer 1

z -score = (x - mean)/SD, Here mean is -1, x = 10 and SD = 2, so

z-score = (10 --1)/2 = 5.5