Answer:
In mathematics, the empty set is the unique set having no elements; its size or cardinality (count of elements in a set) is zero.
Hope this helps!
Step-by-step explanation:
34 is 85% of
40 Change the percentage into a decimal by dividing over 100:

Divide 34 over 0.85:
4 baskets as the largest number divisible by 32 is 8 and the other 2 are also divisible by 8
The answer is A, he can use the spa 3 more times. Hope I helped!
Your answer will be negative 96