Whick scenario is most likely the one shown on the graph?

If p(a) = 0.70 and p(b) = 0.20, then a and b are independent events if

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%

What is the value of p in the equation y^ = -4x?