At a concession stand, seven hot dogs and two hamburgers cost $16.75, two hot dogs and seven hamburgers cost $19.25. Find the cost of one hot dog and the cost of one hamburger. (separate your answers using commas)

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.