Question 410683
During surgery, a patient must have at least 40mg of antibiotic in his system. The amount of antibiotic present k hours after being given 100mg of this antibiotic is shown by y=100(.508)^k. 
After 1.3 hours, find the number of milligrams of antibiotic remaining in the patients system. (Round your answer to the nearest tenth)
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y = 100(0.508)^1.3
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y = 100*0.4146
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y = 41.46 mg
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Cheers,
Stan H.
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