Answer:
2
Step-by-step explanation:
From the graph, we obtain the trigonometric function as:

The corresponding cosine function have equation.

This function is of the form: 
where
is the amplitude.
Therefore the amplitude is |2|=2
The third choice is correct
Answer:
a
Step-by-step explanation:
Answer:
-opposite sides of a parallelogram are congruent.
-definition of a parallelogram
- alternate interior angles are congruent
Step-by-step explanation:
I just did the test
Answer:
The answer is no,because different inputs (number of pounds of bananas) will have different output(costs)