Definitely cell phone reception! However books could be argued for since they also are a good more than a necessity. However the last 2 i believe would be classified more as necessities than goods.
~Hope this helps!~
        
             
        
        
        
Answer
The classroom had 35 glue sticks.  If the ratio of glue sticks to glue bottles was 5:2, how many glue bottles did the classroom have?  _
Explanation:
 
        
             
        
        
        
First solve the cost of running the non- energy star model
 
C = ( $ 0.15 / kWh) ( 0.5 kW) ( 4 hrs /day) 365 day
C = $ 109.5 in a year
 
Solving the cost of the energy star model
 
C = ( $ 0.15 / kWh) ( 0.5 kW) ( 4 hrs /day) (0.4) 365 day
C = $ 43.8
 
Saving in 5 years
S = ( $ 109.5 - $ 43.8) 5
S = $ 328.50
 
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The correct answer is: inserted names, dates, and places often make a statement accurate.