I was practicing some question for an upcoming exam (no grade value for practice questions) but been struggling with z score and probability questions. so i am hoping you can show me how to do these from a to z so i can use it as example to practice more questions please. thank you

Suppose that the random variable x is normally distributed with = 1,000 and standard deviation = 100.

Find each of the following probabilities.Round your z-score calculations to 2 decimal places.Provide your probability answers to 4 decimal places.

need to figure out z score and probability on these-

- P(x>1257)

- P(x<1035)

- P(x700)

also need to find out two z scores (which what i was confused about too) and probability

- P(1000 x1200)

- P(812 x913)