You want to search for Z-scores to learn about this one. I'm looking into the other ones.

I match your first answer for 0.0049, go here:

Probability of a Random Variable in the Normal Distribution

Press Probability Greater than, and enter 2.58, Press Calculate. It will show you the math.

The general consensus for Z-scores is people grab values from a pre-approved table and go from there.

2nd question I quoted, answer is d, use the same link. this time, use the Probability between button, 2 values come from your question, 0 and 0.92

If P(z>c)=0.2358 (c is positive), find c?

a)0.71

b)0.70

c)0.72

d)0.27

Answer is D. Same link I provided

For the other questions, I think it's a similar concept, however I'm not sure if it's the same distribution. I think you have enough to get started, let me know if you have questions.