18. A new math operation, using the
symbol O, is defined to be a ob= 3a
+ b, where a and b are real numbers.
This new operation is:
A. commutative, not associative
B. both commutative,
associative
C. associative, not
commutative
D. neither commutative, associative
Answers & Comments
Answer:
A. commutative, not associative