The answer is B. I hope it help :)
0.88......ones (decimal), tenths, hundredths
so 8 is in the tenths place....8/10
U just add the exponents.
b^8 x b^4 = b^12
hope this helps :)
Luke's original decimal is 0.20 and Bekka's is 0.30 so 0.40 and 0.50 would be greater than Luke's original and 0.20 and 0.10 are lesser than Bekka's original decimal