1. 8y + 3 = 10y + 1   cubic equation   quartic equation   quadratic equation   linear equation   Hint Half-n-half Clue   2. 21x2y3   monomial   coefficient   trinomial   binomial   Half-n-half Clue   3. 5x2y4 and 23x2y4   like terms   variables   coefficients   unlike terms   Half-n-half Clue   4. x in 5x3 + 7x5   variable   coefficient   binomial   constant   Half-n-half Clue   5. 8x4 + 5x3 + 3x2 + 16 = 0   linear equation   cubic equation   quadratic equation   quartic equation   Half-n-half Clue   6. 2x2y + 7xy4   monomial   inequality   trinomial   binomial   Half-n-half Clue   7. 25x2y4 and 3x4y2   unlike terms   like terms   inequalities   coefficients   Half-n-half Clue