A penny is 6×10 –
2 inches thick. The Empire State Building has a height of 1,250 feet, or 1.5×104 inches. How many pennies would you have to stack to reach the top of the Empire State Building?
Write your answer in scientific notation.

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.