The annual salaries of all employees at a financial company are normally distributed with a mean of SA 500 and a standard
deviation of S4,000. What is the z-score of a company employee who makes an annual salary of SSA,000?
5

I'm not sure but i think it's 1670km/h

Period is the time it takes for one “cycle” to complete. in the parent sine function, period is 2*pi since sin(0) = 0, sin(pi/2) = 1, sin(pi) = 0, sin(3pi/2) = -1, and sin(2pi) = 0. at that point, the sequence repeats itself. i’m not sure if your graph is similar to the sine function since you didn’t provide a picture, but you can find the period by looking at a graph.