Question

http://prntscr.com/b7ad72

I'm pretty sure the period is 28?

Answer 1

Yes

Answer 2

But uh... the question doesn't ask for period...

Answer 3

True, but don't I need to find the period for the vertical shift?

Answer 4

Plus it rules out the answer of D.

Answer 5

`don't I need to find the period for the vertical shift?`
no you don't need the period to find the vertical shift

Answer 6

Period and vertical shift are unrelated.

To find vert, find the midline of the function -exactly halfway between the peak and trough

Answer 7

So 15?

Answer 8

So 17.

Answer 9

yes 17

Answer 10

the midline of f(x) = sin(x) is y = 0

the midline of this function is y = 17

so we can see a vertical shift of +17 (up 17)