Martina is currently 16 years older than her cousin Joey. In 5 years she will be 3 times as old as Joey. Use this information to
answer the following questions. If you let x represent Joey’s current age, what expression can you use to represent Martina’s current age? Based on your answer to part a, what expression represents Joey’s age in 5 years? What expression represents Martina’s age in 5 years? What equation can you write based on the information given? What is Joey’s current age? What is Martina’s current age?
For this case we have the following polynomial: 7x2 + 68xy - 20y2 Factoring we have: (7x-2y) (x + 10y) We verify the factorization: 7x2 + 70xy - 2xy - 20y2 Rewriting we have: 7x2 + 68xy - 20y2 Therefore, the factorization is correct. Answer: A) (7x - 2y) (x + 10y)