SOLUTION: Suppose that a households monthly water bill (in dollars) is a linear function of the amount of water the household uses(in hundreds of cubic feet,HCF) when graphed the function gi

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: Suppose that a households monthly water bill (in dollars) is a linear function of the amount of water the household uses(in hundreds of cubic feet,HCF) when graphed the function gi      Log On


   

Question 1128146: Suppose that a households monthly water bill (in dollars) is a linear function of the amount of water the household uses(in hundreds of cubic feet,HCF) when graphed the function gives a line with a slope of 1.75 if the monthly cost for 12 HCF IS 46.11 what is the monthly cost for 7 HCF
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!

m=1.75slope

points (x,y) are (12, 46.11) and (7,v);


%28v-46.11%29%2F%287-12%29=1.75
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v-46.11=1.75%28-5%29
v=46.11-5%2A1.75
highlight%28v=37.36%29