Maya makes and sells cupcakes at a small shop in her neighborhood. She eats 2 per day randomly for quality control. The cupcakes cost $4 each. Let the function m(x)=4(x-2)=4x-8 represent the daily income of Maya's cupcake store. Ping opens a franchise cupcake store in a different neighborhood and decides to charge $3 for each cupcake. Maya and Ping sell the same number of cupcakes daily.
a. Ping wrote a function for the combined income c(x) between the franchise cupcake stores between Maya and Ping. Explain what is wrong with the function c(x) and find the correct function for daily income

Question

Maya makes and sells cupcakes at a small shop in her neighborhood. She eats 2 per day randomly for quality control. The cupcakes cost $4 each. Let the function m(x)=4(x-2)=4x-8 represent the daily income of Maya's cupcake store. Ping opens a franchise cupcake store in a different neighborhood and decides to charge $3 for each cupcake. Maya and Ping sell the same number of cupcakes daily.   
a. Ping wrote a function for the combined income c(x) between the franchise cupcake stores between Maya and Ping. Explain what is wrong with the function c(x) and find the correct function for daily income