Example 1
For each of the problems below, do not answer the ques9on that is being asked. Instead, create a table using Domain values of 0 through 5. Then answer the ques9on in red. Bryan and his band want to record and sell CDs. There will be an ini9al set-‐up fee of $250.00, and each CD will cost $5.50 to burn. What is the problem talking about? CDs and Making Money/Profit Which comes first, CDs or Profit? You have to sell CDs to make a Profit Total Pr ofit 5.50 X= Number of CDs Y= Total Profit Rate of Change = # ofCDs = 1 Ini9al Value = -‐250, the band is in the hole for $250. Slope ! int ercept : y = mx + b Domain Process Range Table: x (# of CDs) f(x)=5.5*x-‐250 y (total profit) Insert Domain values =5.5*0-‐250 Insert Equa9on and x X0 = 0 Y0 = $-‐250 =5.5*1-‐250 X Y1= $-‐ 244.50 values 1 = 1 Solve equa9on and =5.5*2-‐250 X 2 = 2 Y2 = $-‐239 input results into the =5.5*3-‐250 Range values X3 = 3 Y3 = $-‐233.5 =5.5*4-‐250 X Y4 = $-‐228 4 = 4 X5 = 5 =5.5*5-‐250 Y5 = $-‐222.5 How many CDs does the band have to sell to break even?
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