The first guy that can answer this will get 5o points

Can someone me with these two circle theorem questions asap?

Which expression is rational? 6. , square root two, square root 14, square root 49

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