I drive a 2012 dodge challenger registered in North Carolina so use that information to answer the question. My car payment a month is $501 my...

I drive a 2012 dodge challenger registered in North Carolina so use that information to answer the question. My car payment a month is $501 my insurance a month is $120. One common type of calculation that is made frequently out there in the real world is a "fixed and variable cost problem" - it's a "lump and per" scenario. You pay a fixed cost (or a lump sum) to rent the car, or have phone service. Then, in addition, you have to pay a variable cost (so much per mile or per minute). People use math all the time (or should!) to decide which company has the best plan for their needs.car, or have phone service. Then, in addition, you have to pay a variable cost (so much per mile or per minute). People use math all the time (or should!) to decide which company has the best plan for their needs.car, or have phone service. Then, in addition, you have to pay a variable cost (so much per mile or per minute). People use math all the time (or should!) to decide which company has the best plan for their needs.car, or have phone service. Then, in addition, you have to pay a variable cost (so much per mile or per minute). People use math all the time (or should!) to decide which company has the best plan for their needs.