The gas tank is 20% full. At $3.00 per gallon of gas, find the cost to fill the tank.
(1 gal = 231 in.3)

At $3.00 per gallon of gas, it will cost $
to fill the tank.

That she received $100

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.

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