The functions q and r are defined as follows.
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It would take 125 loaves at a cost of $200 for the breadmaker and store bought bread to cost the same.
<h3>Linear equation</h3>A linear equation is in the form:
y = mx + b
where y, x are variables, m is the rate of change and b is the y intercept.
Let x represent the rate of cost of one loaf and y represent the total cost, hence:
y = 0.8x + 100
The rate of cost of one loaf is $0.8 and the start up cost is $100.
For the second bread it is given by:
y = 1.6x
The graph of the two equations cross at (125, 200)
It would take 125 loaves at a cost of $200 for the breadmaker and store bought bread to cost the same.
Find out more on Linear equation at: brainly.com/question/13763238
