1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
balandron [24]
3 years ago
15

A virus that initially infected four people is spreading at a rate of 15% each week.

Mathematics
1 answer:
Solnce55 [7]3 years ago
8 0

Answer:

"f(x) = 4(1.02)7x; spreads at a rate of approximately 2% daily"

Step-by-step explanation:

<u>Complete Question:</u>

A virus that initially infected four people is spreading at a rate of 15% each week. The following function represents the weekly spread of the virus: f(x) = 4(1.15)x. Rewrite the function to show how quickly the virus spreads each day and calculate this rate as a percentage.

f(x) = 4(1.15)7x; spreads at a rate of approximately 1.5% daily

f(x) = 4(1.02)7x; spreads at a rate of approximately 2% daily

f(x) = 4(1.157)x; spreads at a rate of approximately 2.66% daily

f(x) = 4(1.02)x; spreads at a rate of approximately 0.2% daily

<u>Solution:</u>

The weekly number of people infected would be:

f(x)=4(1.15)^x

7 days in a week, so daily number of people infected would be:

f(x)=4(1+r)^{7x}

To find daily rate, we set these 2 equations equal and solve for r:

4(1.15)^x=4(1+r)^{7x}\\1.15^x=(1+r)^{7x}\\1.15^x=((1+r)^7)^x\\1+r=1.02\\r=1-1.02=0.02

That is 0.02*100 = 2% daily

2nd answer choice is right.

You might be interested in
Choose the equations in which d = 1000 will make the equation true
Brilliant_brown [7]

Answer:

there are no equations I can choose from

Step-by-step explanation:

...

5 0
2 years ago
How do you do 5x10+11?<br> Please I am d u m b
jasenka [17]
5 x 10 is 50 then 50 + 11 is 61 so I think it would be 61 ;)
4 0
2 years ago
Read 2 more answers
Uhm helppp??????? :p
Anit [1.1K]

Answer:

Estimating the difference of fractions and mixed numbers is similar to estimating sums. Round each fraction or mixed number and then subtract to find the estimate.

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Keith thinks of a number. When he multiples the number by 6 and subtracts 19.85 from the product, he gets 29.77. Find the number
kirill115 [55]

let the number be X

6x-19.85=29.77

6x=29.77+19.85

6x=49.62

x=8.27

Hope that helps :)

-Asmaa Ghazzawi

8 0
3 years ago
Solve the equation <br> [ 3 2 5 5 ] [ x1 x2] + [ 1 2 ] = [ 2 -3 ]
lukranit [14]

Answer:

x1=3     x2=-4

Step-by-step explanation

4 0
3 years ago
Other questions:
  • A recipe calls for 5 parts strawberry juice to 3 parts water. To make 64 fluid ounces of the strawberry drink. How many fluid ou
    15·1 answer
  • Which statements are true about the polynomial function?
    8·2 answers
  • What is 432*80? Show your work by multiplying with zeros
    9·2 answers
  • What is the answer to this question <br> 8x^2-8
    7·1 answer
  • In △ABC, m∠A=16°, m∠B=49°, and a=4. Find c to the nearest tenth.
    7·1 answer
  • About 1414​% of the population of a large country is nervous around strangersnervous around strangers. If two people are randoml
    9·1 answer
  • Can you guys help i’m kinda struggling
    14·1 answer
  • CAN SOMEONE HELP ME
    10·1 answer
  • What are the zeros of the quadratic equation (x-11)(x-5)=0​
    5·1 answer
  • What is the least common multiple of 4 and 8? Enter your answer in the box.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!