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Algebra
Question

The population, \( P ( t ) \) , in millions, of a ...

The population, \( P ( t ) \) , in millions, of a country, in year \( t \) , is given by the formula \( P ( t ) = 24 + 0.4 t \) . What are the values of the population for \( t = \) \( 10,20 \) , and \( 30 ? \) 

A. \( 30,33,36 \) millions 

B. \( 28,32,36 \) millions 

C. \( 24,28,32 \) millions 

D. \( 26,28,30 \) millions 

Answer

For t = 10 years, \(P( 10) = 28 \text { millions} \)

 

For t = 20 years, \(P( 20) = 32 \text { millions} \)

 

For t = 30 years, \(P( 30) = 36 \text { millions} \)

Option B is true

Solution
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