SOLUTION: The cost C for installing ceramic floor tile in a rectangular
room varies jointly with the length L and width W of the room.
a) Write a formula for this variation.
b) The cost i
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Question 161561This question is from textbook ELEMENTARY AND INTERMEDIATE ALGEBRA
: The cost C for installing ceramic floor tile in a rectangular
room varies jointly with the length L and width W of the room.
a) Write a formula for this variation.
b) The cost is $400 for a room that is 8 feet by 10 feet.
What is the cost for a room that is 11 feet by 14 feet?
This question is from textbook ELEMENTARY AND INTERMEDIATE ALGEBRA
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
The cost C for installing ceramic floor tile in a rectangular
room varies jointly with the length L and width W of the room.
a) Write a formula for this variation.
b) The cost is $400 for a room that is 8 feet by 10 feet.
What is the cost for a room that is 11 feet by 14 feet?
-------------
a) Cost = kL*W (k = cost per square foot)
b) 400 = k*8*10 = 80k
k = $5/sq foot
Cost of the room = $5*11*14
Cost = $770
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