I need help with these 3 questions! If you're gonna answer make sure to have the answers and explanation !

What number produces an irrational number when multiplied by -1.25

12x + 1 = 25 solve the following equation. then place the correct number in the box provided.

65 8 7 4 5 6 8 4 3 2 1 9 5 6 4 2 1 6 5 1 5 1 3 2 3 5 multiply the third number in the first row by the seventh number in the third row. add this result to the fifth number in the second row. add to this total ten times the fourth number in the third row. subtract the eighth number in the first row from the result.