Equation thats passes through the points: (1,3) and (3,9)

Plz which expression is equivalent to the expression below?

Find the distance from the theater to the library. leave your answer in simplest radical form if necessary. 12 √12 74 √74

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%