Answer:
C. 16 grams
Explanation:
0 0=2.7x0 256=256÷1
1 2.7=2.7x1 128=256÷2
2 5.4=2.7x2 64=128÷2
3 8.1=2.7x3 32=64÷2
4 10.8=2.7x4 ???=32÷2