Answer: Maureen's body eliminated the bacteria faster then Ken's as if you multiply 150 times 0.976 you get a number larger then 90 so Ken would have eliminated 150 mg of antibiotics slower then Maureen.
39x3=30x3+9x3
117=90+27
117=117
39x3=30+9x3
117=30+27
117=57
39x3=300x3+9x3
117=900+27
117=927
39x3=30x3+9
117=90+9
117=99
So the first one is correct.
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hope it helps
70,000,000+8,000,000+600,000+20,000+1,000+80+7 = 78,621,087
(8 plus of minus radical 64 + 216
divided by
6
(8 + or - 16.73320053)/6
