SOLUTION: Sam did 4 loads of laundry and it cost her $9. She did 6 loads of laundry and it coat her $13.50. Assume a linear relationship exists between the cost and the number of loads of la

Question 559826: Sam did 4 loads of laundry and it cost her $9. She did 6 loads of laundry and it coat her $13.50. Assume a linear relationship exists between the cost and the number of loads of laundry. How much will Sam pay for 5 loads of laundry?
Thank You for the help.
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Plot Cost on the vertical axis
Plot Loads on the horizontal axis
Use the point-slope formula to get the equation

Multiply both sides by

For 5 loads of laundry,

He pays $11.25 for 5 loads
RELATED QUESTIONS
you do 4 loads of laundry each week at a lauderette where each load costs $1.25. you... (answered by solver91311)

Help me with this word problem please? "Your mother now takes a 4 loads of laundry each... (answered by josgarithmetic)

For each load of laundry.Sandy uses either a quarter of a bottle or half of a bottle of... (answered by macston)

You have 20 loads of laundry. It costs $1.15 to wash a load and $.65 to dry. You have 300 (answered by macston)

At Scott's Laundromat, the washing machines accept only quarters and nickels. If Joe used (answered by srinivas.g)

While on a four-week hiking trip in the mountains, the Tryon family washed 11 loads of... (answered by rfer)

While on a four-week hiking trip in the mountains, the Tryon family washed 11 loads of... (answered by josmiceli)

Zvia's sweater cost twice as much as her hat, and a third as much as her coat. Her coat... (answered by OmniMaestra)

Hello, Can someone please help me with the following problem, I tried and I know that... (answered by stanbon)