Applications of linear relationships

Lessons

1. A waffle is sold for $5 in a coffee shop.
   1. Write an equation relating the money that the coffee shop makes to the number of waffles they sell.
   2. Create a table of values.
   3. Graph the table of values.
2. Find y.
   1. y=-x when x=13
   2. y=2x-10 when x=8
   3. y=-x+4 when x=12
3. The cost of 120 boxes of cookies is $1,080. Each box is sold for $12.
   1. Write an equation for profit made in terms of number of boxes of cookies sold.
   2. Create a table of values.
   3. Graph the table of values.
   4. How many boxes of cookies are sold if the profit is $60?
   5. How many boxes of cookies need to be sold to break even?
   6. What is profit if the cookies are sold out?