To divide like bases just subtract the exponents
answer is 2^(13-3) or 2^10 or 1024
I think that this quesion is missing some background, that is that Ms. Donaldson earned 907.10
So the 34.55 were deduced from this number, and the remaining amount was:
907.10-34.55=872.65
After this, further 28% were deduced, which means that 100-28=72% were left.
And this is:72%*872.55= 628.236 (which we round to 628.24!)
Just subtract the following number from the preceding one.
48- 3= 45
3- 45= -42.
2j+5j=7j Just add the two together.
