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
Vlad [161]
3 years ago
6

Write an exponential function to model the situation.A population of 300 animals decreased at an annual rate of 22%

Mathematics
1 answer:
erastovalidia [21]3 years ago
4 0

Answer:

y = 300(0.78)^x

Step-by-step explanation:

x is the number of years. y is the population after x years.

Each year, the population decreases by 22%, since 100% - 22% = 78%, and 78% = 0.78, each year, the population is 0.78 of the previous year's population.

year zero: y = 300

year 1: y = 300 * 0.78 = 300 * (0.78)^1

year 2: y = (300 * 0.78) * 0.78 = 300 * (0.78)^2

year 3: y = ((300 * 0.78) * 0.78) * 0.78 = 300 * (0.78)^3

year x: y = 300(0.78)^x

You might be interested in
How many ways can a committee chairman choose 4 people for a subcommittee if there are 12 members on the whole committee?
Marina86 [1]
A group of k elements can be chosen from a group of n elements in \frac{n!}{k!(n-k)!} ways.

(^{12} _4)=\frac{12!}{4!(12-4)!}=\frac{12!}{4! \times 8!}=\frac{8! \times 9 \times 10 \times 11 \times 12}{2 \times 3 \times 4 \times 8!}=\frac{9 \times 10 \times 11 \times 12}{2 \times 3 \times 4}= \\ \\
=3 \times 5 \times 11 \times 3=495

The answer is B. 495.
7 0
3 years ago
-2k+5(-45)5x solve plz
kobusy [5.1K]

you keep the 2k

so 5(-45)5x is 5 * -45*5 = -1125

the answer is 2k+-1125x

4 0
3 years ago
Read 2 more answers
Chelsea needs to take a taxi home and lives 7 miles away. The taxi company charges $4 plus $1.50 per mile. How much will she pay
Elza [17]
$14.50 because your equation would be 4+1.50(7)=$14.50.
6 0
3 years ago
The distance on a map between the entrance of the park in waterfall inside the park is 4 1/2 inches if 3 inches is 2 1/2 miles w
aleksandrvk [35]
5 3/4 divided by 4 1/2       23/4 divided by 9/2     23/4 times 2/9      46/36 = 1 and 10/36  (reduced) = 1 and 5/18 inches

5 0
3 years ago
In this combined function, the domain is all real numbers for x except?( x-2) / (x+5)
Sidana [21]
-5 because the denominator can’t equal zero
4 0
3 years ago
Other questions:
  • A recangle is 9ft long and 40 ft wide. What is the area in square ft
    7·2 answers
  • Mark is building a custom wooden frame around his flower bed. The length of the frame is 5.45 feet, and the width of the frame i
    12·1 answer
  • In which number is the place value of 5 equal to one tenth of the place value of the 5 in 6.85
    9·2 answers
  • On June 4th 2020, a new language was created called Math - is - fun! This language is a place value system which is written hori
    10·1 answer
  • Write an algebraic expression for the situation. Twice a number m plus the quantity n minus 4.
    13·2 answers
  • Write 36/48 in simplest form​
    9·2 answers
  • HELP PLEASE HELP EMERGENCY
    7·1 answer
  • Question 7 (Multiple Choice Worth 1 points) )
    5·1 answer
  • John and Sam went to eat pizza. They each decided to order a
    8·2 answers
  • How many two-digit, positive integers can be formed from the digits 1, 3, 5, and 9, if no digit is repeated?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!