SOLUTION: Sarah delivers flyer in the summer for extra money she charges $10 per hour ads-r-us delivery service charges $120 per season A) write an equation for the amount Sarah charges to

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: Sarah delivers flyer in the summer for extra money she charges $10 per hour ads-r-us delivery service charges $120 per season A) write an equation for the amount Sarah charges to       Log On


   

Question 988656: Sarah delivers flyer in the summer for extra money she charges $10 per hour ads-r-us delivery service charges $120 per season
A) write an equation for the amount Sarah charges to deliver the flyers each season
B) write an equation for how much ads-r-us charges
C) what is the intersection point of the two linear equations
D) what does th point of intersection represent
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let +C+ = cost to deliver flyers
Let +h+ = hours Sarah spends delivering flyers
Sarah's equation:
+C+=+10h+
Ads-r-us equation:
+C+=+120+
-------------------
Intersection:
+10h+=+120+
+h+=+12+
----------------
The intersection is the point ( h,C ) = ( 12, 120 )
where the costs of the 2 services are equal
( Sarah spends 12 hrs delivering )
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Here are the plots of the equations:
+graph%28+400%2C+400%2C+-2%2C+15%2C+-10%2C+160%2C+10x%2C+120+%29+