Please help this is timed.

What is the total number of complete waves in the graph below

2

Explanation:

you go from the middle line where it starts until you hit where it starts the pattern so if you took that shape it and flipped the bottom part it makes a big, complete oval

I hope this helped :))

the answer is d. 74.02

it's c (engineer's do their work with mechanical stuff not on any living being)