Answer :
I believe it's D, assuming "a" is a variable. This is because you multiply -16 by 4 to make 3/4a into 3a. The problem is now 3a<-64. Then you divide -64 by 3, which gets you -21.3 or -21 1/3. Now it is a<-21 1/3
Answer:
C. a greater-than 21 and one-third
Step-by-step explanation: