Answer: Hello there!
A model to see the growth of a certain population is the exponential model.
If the initial population is P, then the model can be written as
Where t is the time, and r is growth rate.
and f(0) = P
Then we want to know the time needed for the initial population to be doubled, this is f(x) = 2P, where x is the time that we want to find.
then
then x= ln(2)/r
Answer:
7 / 2
Step-by-step explanation:
Given that:
2 skeins of yarn = $7
7 α 2
7 = 2k
2k = $7
k = constant of proportionality
Make k the subject
Divide bith sides by 2
k = 7/2
To test the correctness of k
8 skeins cost $28
Thus,
8 * k should equal 28
8 * 7/2 = 56/2 = 28
Answer:
Step-by-step explanation:
2½ hours × 640 miles/hour = 2½×640 miles = 1,600 miles
Answer:
Slope = -1
Step-by-step explanation:
6-5/3-4=-1
(can I get brainliest please)
1. x = 31
2. y = 5 + 23
3.
4. y = -7
5. x = -2 + 13