Homework Help: math

Posted by Katherine on Wednesday, September 29, 2010 at 5:18pm.

At Mr. Vid's Rentals you can join his VID for a monthly membership fee of $30. Club members pay only $.85 to rent each movie. If you are not a member of the VID Club, the movies rent for $2.25 each. How many vidoes would you have to rent each month to make a membership with the investiment?

Please help me...I need a formula

math - Kate, Wednesday, September 29, 2010 at 5:21pm
I think the formula would be 30=2.25x
math - Katherine, Wednesday, September 29, 2010 at 5:32pm
so there are 13 vidoes that you would have to rent to get to 30 dollars

i got 30 .85= 29.75
so they need about 35 vidoes...i am so confused...please help me

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