The city of Lightsville currently has 137 streetlights. As part of an urban renewal program, the city council has decided to install and have operational 2 additional streetlights at the end of each week for the next 52 weeks. Each streetlight costs $ 1 to operate for 1 week. a. How many streetlights sill the city have at the end of 38 weeks? b. How many streetlights will the city have at the end of N weeks? (Assume N ≤ 52 .) c. What is the cost of operating the original 137 lights for 52 weeks? d. What is the additional cost for operating the newly installed lights for the 52-week period during which they are being installed?
The city of Lightsville currently has 137 streetlights. As part of an urban renewal program, the city council has decided to install and have operational 2 additional streetlights at the end of each week for the next 52 weeks. Each streetlight costs $ 1 to operate for 1 week. a. How many streetlights sill the city have at the end of 38 weeks? b. How many streetlights will the city have at the end of N weeks? (Assume N ≤ 52 .) c. What is the cost of operating the original 137 lights for 52 weeks? d. What is the additional cost for operating the newly installed lights for the 52-week period during which they are being installed?
Solution Summary: The city of Lightsville has 137 streetlights and the council decided to install 2 additional street lights at the end of each week for the next 52 weeks.
The city of Lightsville currently has 137 streetlights. As part of an urban renewal program, the city council has decided to install and have operational 2 additional streetlights at the end of each week for the next 52 weeks. Each streetlight costs
$
1
to operate for 1 week.
a. How many streetlights sill the city have at the end of 38 weeks?
b. How many streetlights will the city have at the end of N weeks? (Assume
N
≤
52
.)
c. What is the cost of operating the original 137 lights for 52 weeks?
d. What is the additional cost for operating the newly installed lights for the 52-week period during which they are being installed?
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