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I think it's the third option, but i'm not sure please assist

 Mar 22, 2019

Best Answer 

 #1
avatar+18754 
+2

Can't be sin function because it starts at zero at the origin (and there is no L-R shift in any of the answers)

 

Cos funtion starts at 1 at the origin....multiplying it by 7 stretches it up and down by 7   adding 3 shifts it up 3

    so your answer looks good to me   cheeky

 Mar 22, 2019
 #1
avatar+18754 
+2
Best Answer

Can't be sin function because it starts at zero at the origin (and there is no L-R shift in any of the answers)

 

Cos funtion starts at 1 at the origin....multiplying it by 7 stretches it up and down by 7   adding 3 shifts it up 3

    so your answer looks good to me   cheeky

ElectricPavlov Mar 22, 2019
 #2
avatar+533 
+2

The period has pi in it, so the answer can't be A or D. We know that (0, 10) is on the graph because the y-intercept is 10. Plug this into both of them to get 3 = 10 and 10 = 10. The one that is true is 10 = 10, which corresponds to \(\boxed{C}\).

 Mar 22, 2019

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