Express the following verbal phrases into mathematical phrases. Write your an- swers in your answer sheet.

1. Zab is x years old now. What is his age 7 years from now?

2. Joan is twice as old as her sister now. What was her age 6 years ago?

3. A square has a side 3x - 2 , what is the perimeter?

4. Zab’s income is 7x + 6 every day. What is his total income in x days?​