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Marizza181 [45]
3 years ago
11

Which situations can be presented by an exponential function?

Mathematics
1 answer:
Neko [114]3 years ago
7 0

Answer:

C.The value of a motorcycle decrease by 12% each year

D.Every year, the number of online subscribers to a service is 4 times what it was the previous year

Step-by-step explanation:

A function is said to be exponential if it changes (increases or decreases) by a fixed percentage or proportion over a certain period of time.

From the options given, only options C and D is defined as changing based on a certain percentage. And option D cgbages by a clfixed proportion from the initial value.

You might be interested in
Which pair of ratios makes a proportion?
Nana76 [90]

Answer:

  • D. 1/4 and 9/36

Step-by-step explanation:

If two ratios make a proportion then it can be shown as:

  • a/b = c/d ⇒ ad = bc

Let's verify the answer choices with this method

A. 1/4 and 5/25

  • 1*25 = 4*5
  • 25 = 20, incorrect, not a proportion

B. 1/4 and 7/24

  • 1*24 = 4*7
  • 24 = 28, incorrect, not a proportion

C. 1/4 and 10/48

  • 1*48 = 4*10
  • 48 = 40, incorrect, not a proportion

D. 1/4 and 9/36

  • 1*36 = 4*9
  • 36 = 36, correct, this is a proportion
6 0
2 years ago
Celia sells calendars for fundraiser. Each calendar cost $9. She sells 16 calendars to her family members and 14 calendars to th
Sunny_sXe [5.5K]

Answer:

Since Her goal is to earn $ 300 , but now she is earning only $270 ,Hence Celia will not achieve her goal  .

Step-by-step explanation:

Given as :

The cost of each calendar = $ 9

The number of calendar sold to the family = 16

The number of calendar sold to the neighborhood = 14

So, Total number of calendar sold by Celia = The number of calendar sold to the family + The number of calendar sold to the neighborhood

i.e Total number of calendar sold by Celia = 16 + 14 = 30

∵ The cost of each calendar = $ 9

∴ The cost of 30 calendar = $ 9 × 30 = $ 270

Since Her goal is to earn $ 300 , but now she is earning only $270 ,Hence Celia will not achieve her goal  .  Answer

5 0
3 years ago
What does 6/2(1+2)= <br> need help
Zina [86]

▪ Answer:

9

▪ Step-by-step explanation:

Hi there !

6/2(1 + 2) =

= 3/1 × 3

= 3×3/1

= 9

Good luck !

7 0
3 years ago
Read 2 more answers
John made $20 for 2 hours of work. Sally made $50 for 4 hours of work. How do John and Sally's hourly pay rate compare?
olchik [2.2K]
20/2= 10

John makes 10 dollars an hour.


50/4= 12.5

Sally makes 12.50 dollars an hour.

Sally makes more than John. 

I hope this helps!
~kaikers

6 0
3 years ago
Read 2 more answers
A moving company charges $840 plus $17 per hour. Another moving company charges $760 plus $22 per hour.how long is job that cost
adoni [48]
1. Make an equation.
Moving company #1: y = 17x + 840
Moving company #2: y = 22x + 760

2. Put the equations together and solve
17x + 840 = 22x + 760
-17x            -17x
840 = 5x + 760
-760        -760
80 = 5x 
5       5
16 = x

When a job is 16 hours they both charge the same thing.
5 0
3 years ago
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