The equivalent resistance of the three resistors when connected in parallel is:

Since the three resistors in this problem are identical, we can call R their resistance, and we can rewrite the previous equation as

And since we know the value of the equivalent resistance,

, we can find the value of R:

Now the problem asks us what is the equivalent resistance of the three resistors when they are connected in series. In this case, the equivalent resistance is just the sum of the three resistances, so
(1,500 meters) x (1 sec / 330 meters) = (4 and 18/33) seconds
(4.55 sec, rounded)
Answer:
the dependent variable is the one that changes because the independent variable was changed. The dependent isn't intentionally manipulated
Explanation:
I would think 2.759kmockinbirds if you consider mockingbirds equal to a metre and kmockinbird to kilometres