F$850 is deducted each month for 12 months from your checking account to pay your mortgage, what impact will it have on your checking account balance?

10,200how i got the answer was i multiplied $850 times 12 and  thats how you find yur answer

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.