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A room starts with 3 ft square of dust. The dust increase at a rate of 45% a week

A.) Write the equation
B.) How must dust will be in the room after 14 weeks

Respuesta :

unicorn3125
w = number of weeks
45%·3 = dust added by 1 week   
([tex]45\%\cdot3=\frac{45}{100}\cdot3=\frac{135}{100}=1.35[/tex])
d = total of dust

A.)
       d = 3 + 1.35w
B.)
       w=14
       d = 3 + 1.35·14 = 3 + 18.9 = 21.9

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