Answer:
Step-by-step explanation:
We need to first find the model for this particular situation, knowing that this is an exponential decay problem. The main equation for exponential growth/decay (as far as population goes for our problem) is
where a is the initial population, b is the rate of decrease in the population which can also be written as (1 - r), y is the population after a certain amount of time, x, goes by. We will let year 2015 = 0 so year 2021 can = 6. This keeps our numbers lower and doesn't change the answer!
Our initial population in the year x = 0 is 62500. Our rate of decay is
(1 - .016) so our b value is .984
Filling in to find our model:
Now we can use that model and sub in a 6 for x to find the population in the year 2021:
and
y = 62500(.9077590568) so
y = 56734.9 or, rounded to the nearest person, 56735
Add 3 to both sides gives
8q = 4q + 12minus 4q from both sides gives
4q = 12
divide both sides by 4 gives
q = 3
First you would multiply $56 by 5/8:
56 * 5/8 = 35
Now you know that she spent $35 on the shirt. So, subtract 35 from 56 and that's your answer.
56 - 35 = 21
Haley has $21 after buying the shirt. :)
Alright, let's answer this -
Half of 48 is 24...
Half of 24 is 12...
12 three times is 36...
36 + 12 is equal to 48. =)
