exam Maths Puzzle Numerical Ability

The cost of using a calling card is $.95 for the first minute and $.35 for each additional minute. The function is C (t)=.95+.35(t1) where t=time in minutes. What is the charge for 12 minutes?

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4. thank you all so much for your invaluable help. I would like to SEE how I can FACTOR this problem, please help. Thank you!

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