The number of streetlights in a town is growing finearlyFour months ago ln=0 there were 130 lightsNow (n = 4) there are 146 lights this trend continues, how many months will it take to reach 200
You have two data points: (0,130) and (4,146), giving a slope of 4.
so the equation is
y = 4n+130
now just solve
4n+130=200