SOLUTION: The percentage of residents in a city in Ohio with a subscription to the local newspaper decreased from 63.4% in 2005 to 56.8% in 2008. Predict the percentage of residents with a s

Algebra ->  Numeric Fractions Calculators, Lesson and Practice -> SOLUTION: The percentage of residents in a city in Ohio with a subscription to the local newspaper decreased from 63.4% in 2005 to 56.8% in 2008. Predict the percentage of residents with a s      Log On


   

Question 450923: The percentage of residents in a city in Ohio with a subscription to the local newspaper decreased from 63.4% in 2005 to 56.8% in 2008. Predict the percentage of residents with a subscription to the local newspaper in 2012.
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Assume a straight line with a constant slope
slope = +%2856.8+-+63.4%29+%2F+3+=+-6.6+%2F+3+
slope = +-2.2+
For 2012:
+%28+x+-+56.8%29+%2F+4+=+-2.2+
+x+-+56.8+=+-8.8+
+x+=+48+
The percentage of residents with a subscription
to the local newspaper in 2012 is 48%