What is the right choice for question 28) ? http://postimg.org/image/bpwulvsw1/

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baxthum8 | High School Teacher | (Level 3) Associate Educator

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amplitude is (max-min)/2 which means amplitude = (5-1)/2 from graph.

y-intercept = 3 therefore graph is shifted 3 vertically.

Therefore:  `y=Asin(Bx-C)+D`

`y=2sinx+3`

choice "a"

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