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After 5 months, the number of subscribers to a newspaper was 5,730. After 7 months, the number of subscribers to the newspaper was 6,022. Which equation models the number of newspaper subscribers y after
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Apr 27, 2019
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After 5 months, the number of subscribers to a newspaper was 5,730. After 7 months, the number of subscribers to the newspaper was 6,022. Which equation models the number of newspaper subscribers y after x months? y = –146x – 5,000 y = 146x + 5,000 y = 146x – 5,000 y = –146x + 5,000
Mathematics
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Michael Fenwick
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From the information given in the problem we can create a linear model like this: The
will represent the months and the
the subscribers. From the problem we know that after 5 months, the number of subscribers to a newspaper was 5,730, so
and
. We also know that after 7 months, the number of subscribers to the newspaper was 6,022, so
and
.
Remember that the slope of a line is
. since we already found those values, lets replace them to find our slope:
To create our linear model we are going to use the point-slope equation
. Notice that we have all the values, so the only thing left is plug them in our equation:
We can conclude that the
equation which models the number of newspaper subscribers
after
months is
Sitesh
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May 4, 2019
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Sitesh
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