To graph the equations we need to find at least two pointd for each equation, for this we can use the y-intercept (t=0) and the x-intercept (Cost=0)
for car A the y intercept is found when t=0
now for the x intercept we make the cost equal to 0
for this we have the two points (0,22500) and (11.25,0)
We plot both points and graph
we make the same procedure for car B
then
for this we have the two points (0,22500) and (15,0)
We plot both points and graph
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