Hudaelmii Hudaelmii

11-02-2016
Mathematics

Answered

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

Verified Answer :

unicorn3125 unicorn3125

11-02-2016

w = number of weeks
45%·3 = dust added by 1 week
(\(45\%\cdot3=\frac{45}{100}\cdot3=\frac{135}{100}=1.35\))
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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