How do you do the percent kind of math this is hard will you me

Of means multiply so if it says 50% OF 83 then multiply and then multiply with the other number outside of the parentheses.
But for number 2 turn the fraction into a percent. I know what you're thinking,"But Taeminnie10 how can I turn 1/3 into and percent?" It's just 33.33. Multiply 33.33 by 6.399 and do the same steps for everything else. Hope this helped!

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.