book Maths Puzzle Numerical Ability

If you rent a car for one day and drive it 50miles, the cost is 45dollars. if you drive it 300 miles your cost is 120dollars. LetC(m) represent the cost, in doolars, of driving m

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book Other Question
A new catalog from an office supply company shows that some of its prices will increase next month. This month, copier paper costs $2.70 per ream and printer cartridges cost $15.50 -15+7=