ANSWER
Option B
and
Option D.
EXPLANATION
The graph of the function has an amplitude of 2 and a period of

Choose all the equation that has an amplitude of 2 and a period of

These are:

and

The second and the last options are correct.
I believe the correct answer is C) 30<span>°
If this is the right answer then please give a heart and rating so others can know!</span>
Wdym? Can you be more specific?
Hi,
first you should divide 130 (speed) by 2 (time), then divide 390 by 65 (result of 130 / 2)
104 and 105 are consecutive numbers that add up to 209. Maybe this answers your question? Let me know otherwise.