To find out how many miles the whale swims in 16 days, first, determine the rate of swimming per day.
The whale swims 200 miles in 5 days, so:
\[ \text{Rate} = \frac{200 \text{ miles}}{5 \text{ days}} = 40 \text{ miles per day} \]
Now, to find out how far the whale swims in 16 days, you can use the equation:
\[ y = 40 \times 16 \]
Thus, the correct equation from the responses is:
y = 40 × 16.