Math Problem Statement
The amount of money a company has in the bank after t years is 18-+3t-t^2 thousand dollars. a) How much did the bank account increase during year 3? b)What was the average rate of increase of money in the account during year 3? c) What was the instantaneous rate of increase of money in the account at the start of each of the four quarters year 3? c1) start of first quarter c2) start of second quarter c3) start of third quarter c4) start of fourth quarter
d) After how many years did the bank account run out of money?
Solution
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Math Problem Analysis
Mathematical Concepts
Quadratic Equations
Derivatives
Rates of Change
Formulas
Quadratic equation formula
Derivative formula
Theorems
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Suitable Grade Level
Grades 11-12
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