What is the relationship between the coordinates of a point and the coordinates of its reflection across each axis

For f(x)=2x+3 and g(x)=x^2- 8 find (f+g) (x)

Iknow its nothing to do with education, but what type of thing should i wrote here? ? : ) its for mcdonald's btw.

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%