It takes mr. martin 12 minutes to drive his bus route without stopping to pick up any passengers. for each passenger stop, he estimates that 30 seconds is added to his travel time. on tuesday, mr. martin spends 14 minutes driving his route.
which equation can be used to determine the number of passenger stops, p, mr. martin had on tuesday?
14 = 0.5p + 12
14 = 12p + 0.5
p = 0.5(14) + 12
p = 12(14) + 0.5

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