Suppose the number of​ mobile-phone subscribers​ (in millions) between 1995 and 2006 can be modeled by Upper S left parenthesis x right parenthesis equals 18.66 x plus 22.92S(x)=18.66x+22.92​, where x is the number of years after 1995. In what year does this model indicate that there were 358,800,000 ​subscribers?

musicintimeln

musicintimeln

Answered question

2022-08-07

Suppose the number of​ mobile-phone subscribers​ (in millions) between 1995 and 2006 can be modeled by Upper S left parenthesis x right parenthesis equals 18.66 x plus 22.92 S ( x ) = 18.66 x + 22.92, where x is the number of years after 1995. In what year does this model indicate that there were 358,800,000 ​subscribers?

Answer & Explanation

Raelynn Johnson

Raelynn Johnson

Beginner2022-08-08Added 13 answers

Step 1
Given, s ( x ) = 18.66 x + 22.92
where s(x) is the number of subscriber
after x years since 1995.
s ( x ) = 358800000 (or 358.8millions)
18.66 x + 22.92 = 258800000
18.66 x + 22.92 = 358.8
18.66 x = 358.8 22.92
18.66 x = 335.88
x = 335.88 18.66
x = 18 years
Step 2
So, after 18 years since 1995, i.e., in the year 2013. there were 358800000 subscribers. Hence, answer is in the year 2013 but given the model is true for only between 1995 and 2006. So, the year can not be determine.

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