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30 votes
30 votes
The rare tweety-birds are decreasing at a rate proportional to the

amount present. On January 1st there are 10,000 tweety-birds.
Fifteen days later, there are only 9,000.
(Problem la, 3 points)
Write a formula for the total amount of birds.

User TrampGuy
by
2.6k points

1 Answer

27 votes
27 votes
10,000+15x=9000 is the answer
User Ed Harrod
by
2.9k points