This is algebra 2 it’s growth & decay. i need

So firstly, remember that the a variable is the initial value. Since we start off with 6.08 billion, 6.08 billion is the a variable.

Next, since this is a growth by 1.26%, add 1 and 0.0126 (1.26% in decimal form) together to get 1.0126. 1.0126 is the b variable.

Putting it together, the function is

Since 2020 is 20 years from 2000, plug in 20 into the t variable of the prior function to solve:

In context, in 2020 the population will be 7.81 billion.

a

step-by-step explanation:

1.4

2.3

step-by-step explanation:

the formula for the constant of variation is

y= kx

divide each side by x

y/x =kx/x

y/x =k

we know a and y

1.   y/x = k

4/1 =4

check the other values to make sure they are the same

8/2 = 4   12/3 =4   and 16/4 =4  

the constant of variation is 4

2.   y/x = k

3/1 =3

check the other values to make sure they are the same

6/2 = 3   9/3 =3   and 12/4 =3  

the constant of variation is 3