Question 4 of 5 Haley conducted a study which found that a cup of coffee contains 150 milligrams of caffeine. The amount of caffeine in the body each hour after consumption of one cup is 9% less than the previous hour. Which of the following statements best describes what will happen to the amount of caffeine in the body in the hours after consumption? A . As the number of hours after consumption approaches infinity, the amount of caffeine in the body approaches negative infinity. B . As the number of hours after consumption approaches infinity, the amount of caffeine in the body approaches infinity. C. As the number of hours after consumption approaches infinity, the amount of caffeine in the body approaches 0. D. As the number of hours after consumption approaches infinity, the amount of caffeine in the body remains constant.

So, the range is 58.41 ≤ f(x) ≤ 150.

just got it right

Step-by-step explanation:

step-by-step explanation:

12: 00 p.m. to 7: 00 p.m. is a total of 7 hours.

4: 00 p.m. to 7: 00 p.m. is a total of 3 hours.

this means that from 4: 00 p.m to 7: 00 p.m. this represents 3/7 of what was lost from 12: 00 p.m. to 7: 00 p.m.

after knowing this, after doing 11,600 - 6,800 = 4,800

4,800 represents 3/7 of what was lost for 7 hours.

we then divide 4,800 by 3 which gets 1,600.

because we know that 1,600 represents 1/7 of how much water was lost, we just have to multiply by 7, which gets 11,200.   after adding 11,200 to how much water was left at 7: 00 p.m. which was 6,800. 11,200 + 6,800 = 18,000

this means that the pool originally had 18,000 gallons in the pool.

you can also check your work by doing 18,000 - 4(1600), which becomes           1800 - 6400 which gets you 11,600.

hey! so 1 (25) out of 4 (100) is 25 so your answer is 25%. it's like quarters!