PLEASE HELP WITH THE BLANKS
thank you :)

Me find the measure to side a and the process to solve the problem you appreciate it : )

How to find the exponential function y=ca^x, with points (1,2) and (2,1)

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%