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
Kitty [74]
3 years ago
8

In 2007, there were more than 8.14 million cars for sale. The number of cars then decreased by 23% per year. Write an exponentia

l growth or decay model given by the number of c cars over t years after 2007. Use this model to estimate how many cars there were in 2013?
Mathematics
1 answer:
tatuchka [14]3 years ago
7 0

Answer:

In 2013 there were approximately 2.2 million cars for sale.

Step-by-step explanation:

Since the number of cars is decreasing by 23% per year, it is a decay model. This types of decay can be expressed in the following expression:

cars(x) = cars(2007)*(1 - 0.23)^{x - 2007}

Where x is the year, cars(2007) is the number of cars in 2007. Applying this data we have:

cars(x) = 8.14*(0.77)^{x - 2007}

If we want to know the number of cars in 2013, we need to apply that value to x and solve the expression.

cars(2013) = 8.14*(0.77)^{2013 - 2007}\\cars(2013) = 8.14*(0.77)^{5} = 2.20332

In 2013 there were approximately 2.2 million cars for sale.

You might be interested in
In triangle KLM, if K is congruent to L, KL = 9x - 40, LM = 7x - 37, & KM = 3x + 23, find x & the measure of each angle.
timurjin [86]
This is hard to solve when we don't know the visual graph this question is trying to refer from
6 0
2 years ago
How can a rational number and irrational number when multiplied together make a irrational number ?
pochemuha

Answer:

"The product of a rational number and an irrational number is SOMETIMES irrational." If you multiply any irrational number by the rational number zero, the result will be zero, which is rational. Any other situation, however, of a rational times an irrational will be irrational

A better statement would be:

"The product of a non-zero rational number and an irrational number is irrational

6 0
3 years ago
PLZZ HELP ASAP!!!!!
Lelu [443]

Answer:

The answer is 7(8 + 3)

Step-by-step explanation:

7 x 8 = 56

7 x 3 = 21

pls mark brainlyest:)

4 0
3 years ago
Read 2 more answers
The ratio of red to green tiles in a pattern is 2:3 what fraction of the tiles are green
zhannawk [14.2K]
The answer is 2/10


your just reducing the ratio
3 0
3 years ago
Which one is it A B C D
vovangra [49]

Answer:B

Step-by-step explanation: Alternate exterior angles theorem

3 0
3 years ago
Other questions:
  • What's the expression for 150 decreased by the quantity of 6 plus b
    7·1 answer
  • Which of the following are mathematical sentences? Check all that apply.
    9·2 answers
  • Which statement is true about the product square root of 2(3square root of 2 + square root of 18)? 2
    15·1 answer
  • I really need help with this ?
    10·1 answer
  • YALL. I NEED HELP FOR SCIENCE
    10·1 answer
  • The sum of two numbers is 12. The difference between twice the first number and the second number is 33. Find the two numbers
    12·2 answers
  • Please help need quickly
    7·1 answer
  • I need help please???​
    5·1 answer
  • Enter the values of x, y, and z. The diagram is not to scale.
    12·1 answer
  • Lois jumped 270 times in 6 hours. At that rate, how many times would she jump in 4 minutes?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!