Please show work so that I know where the numbers are coming from, thank you!

Some IQ tests are standardized to a Normal model N(100,14). a) What cutoff value bounds the highest 5% of all le? b) What cutoff value bounds the lowest 20% of the le? c) What cutoff values bound the middle 80% of the le? a) The Cutoff value is D. (Round to one decimal place as needed.) b) The cutoff value is D. (Round to one decimal plaoe as needed.) 0) The cutoff values are D and D. (Use ascending order. Round to one decimal place as needed.)