Assignment:
Q1. Solve. 2x / 5 = -10
Q2. The sum of an integer and its square is 12. Find the number
Q3. Solve. 4(7x + 10) = 3(9x - 5) + 20
Q4. Simplify ( 3x - 6y)2
Q5. The product of two consecutive numbers is 30. Find the smaller of the numbers.
Q6. Subtract 4x2 - 5x from the sum of 9 x2 -2 and 6x - 1.
Q7. A pair of cuff links was marked up $225 from cost, which amounts to a 50% increase. Find the original cost of the pair of cuff links.
Provide complete and step by step solution for the question and show calculations and use formulas.