A paint mixture is made up of 3/20 red paint and 9/20 blue paint, and the rest is white paint. The paint is sold in 5-litre containers. How many litres of red paint are needed for each container?

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.