Demont used 4 gallons of gasoline in three days driving to to work. each day he used the same amount of gasoline. hkw many gallons of gasoline did he use each day?

The answer is 1.3 gallons per day.

He uses 4 gallons for 3 days. We need to find a number of gallons (x) per 1 day.
Make a proportion:
4 gallons : 3 days = x : 1 day
x = 4 gallons * 1 day : 3 days
x = 4/3 gallons
x = 1.3 gallons

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.