Hancox Homes is a popular construction company that builds aff ordable housing. When the company fi rst started, they sold 1 home the fi rst month, 3 homes the second month, 9 homes the third month, and 27 homes the fourth month.

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.