Answer: THIRD OPTION.
Step-by-step explanation:
 Given the following inequality:
 
 You can follow these steps in order to solve it:
 1. Apply Distributive property on the left side:
 
 2. Add 15 to both sides of the inequality:
 
 3. Finally, divide both sides of the inequality by 3:
 
  The symbol is  means "Greater than or equal to", and indicates that 7 is  include in the solution.
 means "Greater than or equal to", and indicates that 7 is  include in the solution. 
 Therefore, the solution can be expressed as:
  
 
 Now you must mark this point with a closed dot on the number line and shade everything to the right.