Ted ran 2/5 in 3/4 hour. what is his speed?

1/3 miles per hour, because speed equals distance divided by time.

Hello Camilla~

First, start by converting the fractions into decimal. It will make it easier :)

2/5 = 0.4 mile

3/4 = 0.75 hours

What is the formula to find speed?

Well, Speed = distance traveled divide by the time taken.

Speed = 0.4/0.75

Speed = 0.53mph

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.