Which number produces a rational number when added to 2/5

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

If p(a) = 0.70 and p(b) = 0.20, then a and b are independent events if

Idon't get undoing if its pass adding and subtracting so can someone ? x-2 over 5 = 18