Can someone please help me with this

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%

Determine the area of a triangle with (see picture below)

Write the equation of the circle centered at (10,-2) with radius 2.