Final answer:
Andrew's unit rate for swimming is 1 10/11 laps per minute.
Step-by-step explanation:
To find Andrew's unit rate for swimming, we need to calculate how many laps he swims in one minute.
First, we know that Andrew swims 7/11 of a lap in 1/3 of a minute.
To find the unit rate, we divide the distance (7/11 of a lap) by the time (1/3 of a minute).
(7/11 ÷ 1/3) = (7/11 × 3/1) = 21/11 = 1 10/11 laps per minute.
Therefore, Andrew's unit rate for swimming is 1 10/11 laps per minute.