Choose the correct graph using the following function.

  Your selection is correct

Step-by-step explanation:

The graph of cos(3x) will have an amplitude of 1 and will have 3 periods in the interval 0 to 2π. It will cross the y-axis at (0, 1). That is the graph that is shown highlighted in your problem statement.

Your selection is correct.

you can first factor out the n to get n(1+5). we know that 1+5 is 6, so we just have 6n.

i believe it is 0.1m because the measurement of 30.4m limits how precise you can be

you can only be as precise as the least precise measurement