One 747-airplane can carry 420 passengers. how many total passengers can three planes carry?

420•3= 1,260 passengers

420x3=1,260.
So, three planes can carry 1,260 passengers.
Hope this helps!

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.

It would take her 20 minutes.