Question

unit 1 online homework
score: 77/100 answered: 23/29
question 17
evaluating expressions - application
avni has a headache, and takes 750 mg of tylenol. the amount, a, of tylenol remaining in her body after n hours is given by the formula a = 750(0.8)^n. how much of the tylenol remains in her body after 4 hours? round your answer to the nearest hundredth.
avni will have mg of tylenol remaining in her body after 4 hours.
question help: video

Explanation:

Step1: Substitute n = 4 into formula

$A = 750(0.8)^{4}$

Step2: Calculate $(0.8)^{4}$

$(0.8)^{4}=0.8\times0.8\times0.8\times0.8 = 0.4096$

Step3: Calculate A

$A=750\times0.4096 = 307.20$

Answer:

$307.20$