Table shows the number of wireless service subscribers in the United States and their average monthly bill in the years from 2000 through 2015. \begin

boitshupoO

boitshupoO

Answered question

2021-06-11

Table shows the number of wireless service subscribers in the United States and their average monthly bill in the years from 2000 through 2015

. YearSubscribersAverage Monthly (millions)Revenue per Subscriber Unit 2000109.548.552001128.449.792002140.851.002003158.751.552004182.152.542005207.950.652006233.049.072007255.449.262008270.348.872009285.647.972010296.347.532011316.046.112012326.548.992013335.748.792014355.446.642015377.944.65

One of the scatter plots suggests a linear model. Use the points at t = 0 and t = 15 to find a model in the form y = mx + b.

Answer & Explanation

Nicole Conner

Nicole Conner

Skilled2021-06-12Added 97 answers

The scatter plot for the subscribers suggests a linear model because the points appear to lie on a line.
Use (t1,y1)=(0,109.5) and (t2,y2)=(15,377.9) to find the slope:
m=y2y1t2t1=377.9109.515017.9
Since the y-intercept is the y-value, when t=0, we know that b=109.5 from the first point. So, the equation is: y=17.9t+109.5

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