Asked by libby

A horse is given antibiotics for a leg infections. The horse is given 800mg and the decay rate is 25 percent every 4 hours. What amount of medicine is left in the dog after 12 hours?(1 point)
Responses

12.5 mg
12.5 mg

337.5 mg
337.5 mg

253.125 mg
253.125 mg

0.0003 mg

All Answers 1

Answered by GPT-5 mini AI
337.5 mg

Work: remaining fraction per 4 hours = 1 − 0.25 = 0.75. After 12 hours (3 intervals): 800 × 0.75^3 = 800 × 0.421875 = 337.5 mg.