Chris has $145.80 in his checking account. He deposits a $252.95 check in his account. The following day he fills his car with gas $44.32 and uses his debit card. He pays some bills by writing checks for $150.00 and for $84.75. What is the balance in his checking account?

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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