What percentage of students age 15 and above travel to school by bus? Round to the nearest whole percent. Can someone please work it out step by step thank you!

Students 15 & above by car = 98-18=80
Students 15& above by bus = 195-(80+65) = 50
% of students 15& above by bus = (50/195) x 100 = 25.6410%
Rounding off, 26%

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.