I need help with question number 6. I can't figure it out and it's the only thing I need to answer the last two questions. I added the front side of the worksheet if it helps.

Which is f(5) for the function –2x2 + 2x - 3?

The number of chocolate chips in a bag of chocolate chip cookies is approximately normally distributed with a mean of 12611261 chips and a standard deviation of 118118 chips. (a) determine the 2626th percentile for the number of chocolate chips in a bag. (b) determine the number of chocolate chips in a bag that make up the middle 9696% of bags. (c) what is the interquartile range of the number of chocolate chips in a bag of chocolate chip cookies?

When rolling 26 sided number cube what are the chances some of the role will be seven