1. 5 in 7x5   exponent   square   coefficient   cube   Hint Half-n-half Clue   2. 5x2y4 and 23x2y4   variables   unlike terms   like terms   coefficients   Half-n-half Clue   3. 25x2y4 and 3x4y2   unlike terms   coefficients   like terms   inequalities   Half-n-half Clue   4. x in 5x3 + 7x5   binomial   variable   coefficient   constant   Half-n-half Clue   5. 8y + 3 = 10y + 1   linear equation   quadratic equation   cubic equation   quartic equation   Half-n-half Clue   6. 4x2 + 5x + 7 = 0   cubic equation   quartic equation   linear equation   quadratic equation   Half-n-half Clue   7. 9x3 + 5x2 + 3x + 16 = 0   quartic equation   cubic equation   quadratic equation   linear equation   Half-n-half Clue