In Xavier’s coin collection, 1 5 of the coins are pennies, 11 40 of the coins are nickels, and 1 4 of the coins are dimes. Which list correctly compares these portions of Xavier’s coin collection?

Hello!
volume of sphere =4/3.pi.r^3

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.