Simply divide 80 by 5. 5 goes into 80 16 times, and each 5 = one minuet, so it would take 16 minuets to fill the pool with 80 gallons.
The amount of drugs that will be left after 12 hours is 17.42 mg provided Sarah takes 550 mg of an antibiotic every hour.
<h3>What is exponential decay?</h3>
Exponential decay can be described as a reduced amount of an original substance by a definite percentage over a period of time. It can be determined by using the formula:

where;
- y = total amount,
- a = initial amount = 550 mg
- r = the growth rate = 0.25
- t = number of growth periods = 12 hours

y = 17.42 mg
Therefore, we can conclude that the amount of drugs that will be left after 12 hours is 17.42 mg.
Learn more about the exponential decay model here:
brainly.com/question/12940982
Answer:
-10
Step-by-step explanation:
You want to know the rate of descent in feet per second represented by a descent of 40 feet in 4 seconds.
<h3>Rate</h3>
The rate is the amount divided by the time:
-40 ft/(4 s) = -10 ft/s
The relevant integer is -10.
Answer:
The shape is a reduction, and the scale factor is actually 2/3.
Step-by-step explanation: