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-BARSIC- [3]
3 years ago
13

A medical lab is testing a drug that removes a certain percent of fluid from the lungs of a patient every eight hours. The expre

ssion below represents the number of milligrams of fluid remaining in a patient's lungs after n days.
4.000(0.58)^3n

Which statement best describes the exponent, 3n?

A.the rate at which the amount of fluid in the patient's lungs is removed by the drug


B.the initial amount of fluid in the patient's lungs before the drug is introduced


C.the amount of fluid remaining in the patient's lungs after each day


D.the number of times the drug has removed a certain percentage of fluid from the patient's lungs
Mathematics
2 answers:
KatRina [158]3 years ago
8 0

D.the number of times the drug has removed a certain percentage of fluid from the patient's lungs
Studentka2010 [4]3 years ago
3 0

Answer: D. The number of times the drug has removed a certain percentage of fluid from the patient's lungs

Step-by-step explanation:

In a standard exponential function Ab^x, A is the initial amount and b is the multiplicative factor and x is the number of time periods.

Given: A medical lab is testing a drug that removes a certain percent of fluid from the lungs of a patient every eight hours.

The expression below represents the number of milligrams of fluid remaining in a patient's lungs after n days.

4.000(0.58)^3n,

As comparing to the standard exponential equation,  here 3n represents the number of times the drug has removed a certain percentage of fluid from the patient's lungs.

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allochka39001 [22]

Answer:

y = 3x

Step-by-step explanation:

Let's select two points from the given graph.

(1,3) (3,9)

Now, let's use slope formula to find the slope.

m = y2-y1/x2-x1

= 9-3/3-1

= 6/2

= 3

Let's substitute/plug this value into the slope-intercept form.

y = 3x + b

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Therefore,

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4 0
2 years ago
Look at this expression.
Dafna1 [17]

Answer:

-15x+5

Step-by-step explanation:

Multiply you'll get your solution

5 0
3 years ago
Read 2 more answers
The third term of an arithmetic sequence is 14 and the 9th term is -1. Find the first four terms of the sequence.​
Liula [17]

Answer:

The first four terms of the sequence are :  19, 16.5 , 14 , 11.5

Step-by-step explanation:

In the given sequence:

a(3) =  14, a(9)  = -1

The general term of a sequence in Arithmetic Progression is:

a(n) = a + (n-1)d

a(3) = a + (3 -1) d = a + 2 d

and a(9) = a + (9- 1 ) d = a  + 8 d

⇒   a + 2 d =  14      .........  (1)

and a + 8 d  = -1    ...........  (2)

Now, solving the given system of equation, we get:

From (1), a  = 14 - 2 d

Put in (2), we get:

a + 8 d  = -1                ⇒   14 - 2 d + 8d = -1

⇒  14 +   6d   = -1  

or,  6d = -1 -14 = -15

⇒  d = -15/6 = -2.5

or, d  = -2.5

Then a  = 14 - 2 d = 14 - 2(-2.5)  =14 + 5  = 19, or a  = 19

Now, first four terms of the sequence is:

a = 19

a(2) = a + 4 = 19 - 2.5 = 16.5

a(3) = a + 2d = 19 + 2(-2.5) = 19 - 5 = 14

a(4) = a  + 3d = 19 + 3(-2.5)  = 19  - 7.5  = 11.5

Hence, the first four terms of the sequence are :  19, 16.5 , 14 , 11.5

4 0
3 years ago
5 − c = –11 <br><br> c = ?<br><br> What is C? Please help! I'll give brainliest
jonny [76]

Answer:

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Step-by-step explanation:

you would get c alone so you subtract 5 to the other side

4 0
2 years ago
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The amount of an invoice is $1000, with terms 2/10, n45. The amount to be paid within the discount period is:
just olya [345]

Answer:The amount to be paid within the discount period is $980

Step-by-step explanation:

The term 2/10, n45

means that 2%  discount is  offered if the amount of invoice is paid within 10 days from the date of invoice .

n/45 means that the buyer will pay the full amount within 45 days if he /she does not pay within the discount period of 10 days .

Now if the amount is to be paid within the discount period, the amount will be

Amount to be paid= $1000- 2% of 1000

= $1000-20

=$980

6 0
3 years ago
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