exam Maths Puzzle Numerical Ability

Hi All,

I need some help with graphs, I have serveral that I did to do and I don't know anything about graphs. Can someone please help me with the following.

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exam Other Question

Please help solve 14 + (-1). The answer I got was 13. I just want to make sure that my answer is correct. I am a little rusty on this problem. Thank you for your help. The cost for a long-distance telephone call is $0.36 for the first minutes and $0.21 for each additional minute or portion thereof. Write an inequality representing the number of minutes a person could talk without exceeding $3.00.