Question

Elizabeth and Daniel are starting competing coffee roasting businesses. They each first buy a large coffee roasting machine and then spend money to buy coffee beans as they need them.

For Daniel, these costs can be described by the equation y = 7x + 55 where y is total cost in thousands of dollars and x is the number of tons of coffee beans roasted.
For Elizabeth, these costs are given in the graph below.

Use the information (Pictures) provided to determine who paid the least for their coffee roasting machine. Explain how you determined this.

Answer 1

Daniel :
y = 7x + 55
so if he roasted no beans...x would be 0
y = 7(0) + 55
y = 55 thousand......spent on the coffee machine

Elizabeth :
notice how ur graph has points (0,60)...this is saying that when 0 beans were roasted, she paid 60 thousand for the coffee machine

therefore, Daniel paid the least for the coffee machine