Help please

Use it standard algorithm solve this question

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X 890

What's the difference between: x≥0 and nonnegative integer. ?

Hi, can anyone show me how to do this problem? 100 points for this. in advance

The graph and table shows the relationship between y, the number of words jean has typed for her essay and x, the number of minutes she has been typing on the computer. according to the line of best fit, about how many words will jean have typed when she completes 60 minutes of typing? 2,500 2,750 3,000 3,250