Need it know plz help

Witch represents the inverse of the function f(x)=1/4x-12

In a certain city, the hourly wage of workers on temporary employment contracts is normally distributed. the mean is $15 and the standard deviation is $3. what percentage of temporary workers earn less than $12 per hour? a. 6% b. 16% c. 26% d. 36%

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