The number of streetlights in a town is growing linearly. Four months ago (t = 0) there were 47 lights. Now (t = 4) there are 107 lights. If this trend continues, (a) Find an explicit formula for the number of lights in month t. Pt= lights. (b) How many months will it take to reach 211 lights? Round your answer to the nearest month. months.

College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter1: Equations And Graphs
Section1.3: Lines
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The number of streetlights in a town is growing linearly.
Four months ago (t = 0) there were 47 lights. Now (t = 4)
there are 107 lights. If this trend continues,
(a) Find an explicit formula for the number of lights in
month t.
P₁ =
lights
(b) How many months will it take to reach 211 lights?
Round your answer to the nearest month.
months.
Transcribed Image Text:The number of streetlights in a town is growing linearly. Four months ago (t = 0) there were 47 lights. Now (t = 4) there are 107 lights. If this trend continues, (a) Find an explicit formula for the number of lights in month t. P₁ = lights (b) How many months will it take to reach 211 lights? Round your answer to the nearest month. months.
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