Adam earns $\$36$ for every four hours of work. If he continues to be paid at the same rate:  

1. How long will it take him to earn $\$144$? Show and explain your reasoning.

   Hint (a):

   $\$144\div\$36=4\text{ sets of } 4\text{ hour seach|}$

   Answer (a):

   $16$ hours

2. How long will it take him to earn $222? Show and explain your reasoning.

   Hint (b):

   $$222 ÷ $36 = \text{ how many sets of } 4 \text{ hours each?}$

3. How could you describe his rate for a $40$-hour work week? For a $7$-hour day? Show and explain your reasoning.

   Hint (c):

   If Adam makes $$36$ for every $4$ hours, how much does he make for every hour?
   Now find what he makes for $40$ hours and $7$ hours.

   Answer (c):

   $$360$ for a $40$-hour week, $$63$ for an $7$-hour day.