The student was diligent in completing his assignments.

Between what values of x is the expression 19x - 2x² - 35 positive?

I. x² + 25x + 154 = 0

II. y² + 27y + 181 = 0

I. 7x² + 27x + 18 = 0

II. 19y² - 27y + 8 = 0

I. 7x + 8y = 36

II. 3x + 4y = 14

I. 3x² + 3x - 60 = 0         

II. 2y² - 7y + 5 = 0 

I. 3p² - 17p + 22 = 0

II. 5q² - 21q + 22 = 0

Solve the quadratic equations and determine the relation between x and y:

Equation 1: 4x² - 12x + 9 = 0

Equation 2: 2y² + 10y + 12 = 0

I. 2x² + 13x + 21 = 0

II. 3y² + 34y + 63 = 0

I. 3x² - 14x + 15 = 0

II. 15y² - 34 y + 15 = 0

I. x² - 17x + 70 = 0

II. y² - 11y + 28 = 0