Answer:
Step-by-step explanation:
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Y= 3x + 1
Y = 3x + 3
Y= 3x + 4
The population of the Bulbul birds at the start of the migration season is 1800.
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Exponential function</h3>
An exponential function is given by:
y = abˣ
Let y, x are variables, a is the initial value and b is the multiplication factor.
Let P be the population of the bird t days since the start of the migration season.

The population of the Bulbul birds at the start of the migration season is 1800.
Find out more on Exponential function at: brainly.com/question/12940982
170 should be added because 9x7 is 63 and you would subtract 63 from 233