Mathematics, 11.02.2021 03:50 Yasin36

In the year 1995, the average cost of a cellphone could be modeled by -10t2 + 1600 where t is the number of years since 1995. By the year 2009 the average cost had changed, so it could be modeled by -18t2 + 800.
Find the difference in the average costs for a cellphone between 2009 and 1995.

In the year 1995, the average cost of a cellphone could be modeled by -10t2 + 1600 where t is the n

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In the year 1995, the average cost of a cellphone could be modeled by -10t2 + 1600 where t is the number of years since 1995. By the year 2009 the average cost had changed, so it could be modeled by -18t2 + 800. Find the difference in the average costs for a cellphone between 2009 and 1995.

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In the year 1995, the average cost of a cellphone could be modeled by -10t2 + 1600 where t is the number of years since 1995. By the year 2009 the average cost had changed, so it could be modeled by -18t2 + 800.
Find the difference in the average costs for a cellphone between 2009 and 1995.