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Mathematics 15 Online
OpenStudy (anonymous):

at the Wild Thing Zoo, you can rent a motorized cart to tour the grounds for a $4 initial charge and $4 per hour. An equation that represents the total cost y for x hours is y=4 + 4x. At SafariZook you can rent the same cart for a $3 initial charge and $5 for hour. An equation that represents the total cost y for x hours is y=3+5x. For how many hours is the total charge the same?

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