I just need the answers for c and d. Can you please show me all of your steps on how you got your answers?

7.3 The distribution of scores on the SAT test is approximately normal with u = 500 and o = 100. a. What proportion of the b. What proportion of the c. What is the minimum 5 population? What SAT score separates the top 70% population have SAT scores above 540? population have SAT scores below 525? AT score needed to be in the highest 25% ofthe d. I from the rest of the distribution