Answer:
I'm probably wrong
A-C
Step-by-step explanation:
Here is a picture of the graph put into desmos
Desmos is super easy all you have to do is put in the equation and it graphs it for you but you can also use it as a regular calculator.
Answer:
The amplitude of the sinusoidal function is 3
Step-by-step explanation:

Here the topic is "functions." Roughly speaking, we have a box. Input enters at one end and output exists at the other. Now, if every input value x (such as 2) is doubled by the box, every output value is 2x: (0,0), (1,2), (2,4), etc.
We call this "doubling" a "constant rate of change.
If you plot the points given, you'll see that they all are on a straight line. That straight line has the slope 2: y = 2x. Again, 2 is the "constant rate of change" here.
If you drive at a steady 55 mph, you are covering 55 miles during every hour behind the wheel. Again, 55 is a "constant rate of change."