Asked by Sarah
The population of a town in 1920 was 3500 people. The town's population decreased linearly, and in 1927 the population was 3185. Find a formula for P, the town's population, in terms of t, the number of years since 1920.
Answers
Answered by
Reiny
find rate of change:
(3500 - 3185)/(1920 - 1927)
rate of change = 315/-7
= -45
so P = -45t + b
when t = 0, P = 3500
3500 = 0 + b
b = 3500
P = -45t + 3500
(3500 - 3185)/(1920 - 1927)
rate of change = 315/-7
= -45
so P = -45t + b
when t = 0, P = 3500
3500 = 0 + b
b = 3500
P = -45t + 3500
Answered by
piper rockelle
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