Question

needing help on algebra 1....

Answer 1

@Brainybeauty

Answer 2

hope she can help you ^_^ god luck

Answer 3

good luck*

Answer 4

:)

Answer 5

Iris has been studying an invasive population of snails. This particular snail has no local predators, so the population grows wildly. She has observed that the population follows an exponential rate of growth for fifteen years.
1.Create your own exponential function, f(x), which models the snail population. You will need to identify the principal population of the snails and the rate of growth each year. Explain to Iris how your function shows the principal population and the rate of growth, in complete sentences.

Answer 6

Kevin where's your question?

Answer 7

@Brainybeauty i meant can u help her please

Answer 8

Ohh!!! Okay sure! Why not?

Answer 9

cool i owe u ^_^

Answer 10

See, the formula for exponential growth is a(r^n -1) / r-1

Answer 11

yess..

Answer 12

Here, a is the principal population and r is the number by which it is multiplied each year.
n is the number of years.

Answer 13

So the formula will be \[f(x) = x(r ^{n}-1) \div r-1\]
That will be the total number of snails at the end of each year.

Answer 14

(r-1) is in brackets

Answer 15

so what do i do with that formula? do i solve it?

Answer 16

You're supposed to find the formula, right?

Answer 17

im not sure. in # 1 it says to create my own exponetial function.

Answer 18

for example, f(x) = 200 (1.03)2^x but that function is in number two so it cant be used. and im not sure how to come put with my own.

Answer 19

@Brainybeauty

Answer 20

f(x) = 200 (1.03)^2x

Answer 21

**

Answer 22

Okay, for example the number of snails is 200.
And every year the number of snails doubles each year. So the formula for 15 years will be --- \[200(2^{15} - 1) \div (2-1)\]

Answer 23

okay. thanks. im still kinda confused but ill manage ..

Answer 24

Okay I'll try to explain again oaky?

Answer 25

The principal pop. is x
The rate is r*100 per cent

Answer 26

@Ayeeitshannaahhh since brainly helped can u give her a medal?

Answer 27

okay

Answer 28

thanks Hannah ^_^