SOLUTION: Can someone PLEASE help me ?? I am stuck. Assume there is a linear relationship between the size of a house and its cost. Then find out how much it would cost to build a 2300 squa

Question 160719: Can someone PLEASE help me ?? I am stuck.
Assume there is a linear relationship between the size of a house and its cost. Then find out how much it would cost to build a 2300 square foot house.This table shows the cost of building two different size houses:
size (sq.ft):1500,1900
cost :$20 000,$24 000
Find an equation that shows the relationship between the size of a house and its cost. Then find out how much it would cost to build a 2300 square foot house.

Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
size (sq.ft):1500,1900
cost :$20 000,$24 000
(24,000-20,000)/(1900-1500)
4000/400=$10 per ft^2
(2,300-1,900)*10+24,000
400+10+24,000
4,000+24,000=$28,000 for the 2,300 ft house.
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