There are some nickels and dimes in a large piggy bank. For every 2 nickels there are 3 dimes. There are 100 coins total. How many of each coin are in the piggy bank? help

$7.50x+$4.50y=midk it's been awhile since i've done one of these

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.