The operation \nabla is defined by a \nabla b=4 a+b. The value of (5 \nabla 2) \nabla 2 is
Answer Choices
A. 21
B. 22
C. 30
D. 88
E. 90
The operation \nabla is defined by a \nabla b=4 a+b. The value of (5 \nabla 2) \nabla 2 is
Answer Choices
A. 21
B. 22
C. 30
D. 88
E. 90