Final answer:
Mrs. Kurz swims 8 lengths in 1 minute.
Step-by-step explanation:
To determine how many lengths Mrs. Kurz swims in 1 minute, we need to find the number of lengths she swims in 1/4 of a minute and then multiply it by 4. Since she swims half the length of the pool in 1/4 of a minute, we can conclude that she swims 2 lengths in 1/4 of a minute.
To find the number of lengths she swims in 1 minute, we multiply 2 by 4, which gives us 8. So, Mrs. Kurz swims 8 lengths in 1 minute.