Shelley is searching online for airline tickets. two weeks ago, the cost to fly from denver to boston was $220. now the cost is $345. what is the percent increase? what would be the percent increase if the airline charges an additional $50 baggage fee with the new ticket price?

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.