Given the table below, use a left Riemann sum with 4 subdivisions indicated by the data in the table to approximate LaTeX: \int_2^{13}f\left(x\right)dx∫ 2 13 f ( x ) d x . Show the work that leads to your answer.

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%