Select the most appropriate meaning of the given

I. x² + 3x – 154 = 0

II. y² + 5y – 126 = 0

(60 × 8 ÷ 10) × 5 = ?

1550 ÷ 62 + 54.6 x 36 = (? x 10) + (28.5 x 40)           

What will come in place of (?) question mark in the following expression.

 (√1296 ÷ √36) × ? = 120

What will come in the place of question mark (?) in the given expression?

(3.2 × 35 + ?) ÷ √16 = 38.5

276 ÷ 11.5 + 12 = ? x 3

What will come in the place of question mark (?) in the given expression?

?% of 2480 + 15 × 34 = 1440

2850 ÷ 2.5 - ? × 42 = 300

(15 x 6 + 60% of 500 - 16 x 7) = ?