At the beginning of a population study, a city had 290,000 people. Each year since, the population has grown by 8.8%. Lett be the number of years since start of the study. Let y be the city's population.
Write an exponential function showing the relationship between y and t.

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.