Assignment:
Q1. If one book of stamps lasts a family three months. How many books of stamps would be needed to last the family a year?
Q2. If one book of stamps lasts a family three months. How many books of stamps would be needed to last the family a year?
Q3. Find a counterexample to the statement: The cube of a number added to the sum of three times the number and 3 is a prime number. Justify your solution.
Q4. Sally and Bill work at different jobs. Sally earns $12 per hour and Bill earns $10 per hour. They each earn the same amount per week but Bill works 3 more hours. How many hours a week does Bill work?
Provide complete and step by step solution for the question and show calculations and use formulas.