Savagepanda911
05.09.2020 •
Mathematics
18. A small town is losing residents at a rate of 24 residents per year.
If this pattern continues for 5 years, what will be the change in relation
to the original population? Write your answer as an integer representing the situation.
WRITE YOUR EQUATION BEFORE YOU ANSWER! *
(2 Points)
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Ответ:
The total costs will be the same at the 5-month
Step-by-step explanation:
The question is
After how many months will the cost be the same?
Let
x ---> the number of months
y ---> the total charge
we know that
The linear equation in slope intercept form is equal to
where
m is the slope
b is the y-intercept
Nextel
we have
The slope is equal to
The y-intercept is equal to
substitute
---> equation A
AT&T
we have
The slope is equal to
The y-intercept is equal to
substitute
---> equation B
Solve the system of equations by graphing
Remember that the solution of the system is the intersection point both graphs
using a graphing tool
The solution is the point (5,375)
see the attached figure
therefore
The total costs will be the same at the 5-month
Prior to 5 months, Nextel is more expensive.
After 5 months, AT&T is more expensive