Answer:
3 dollars
Step-by-step explanation:
15 x .2
Because you convert the percentage to a decimal
 
        
             
        
        
        
Okay. For these types of problems, you must do order of operations (PEMDAS). Parenthesis, Exponents, Multiplication, Division, Addition, Subtraction. Mind you that you do these steps from left to right, and multiplication and division is done from left to right. Same thing with addition and subtraction. With that being said, here are your answers if you do the expressions correctly.
1. 12
2. 106
3. 42
        
             
        
        
        
The answer is 27 I believe
        
                    
             
        
        
        
Angle a is 35 degrees angle b is 55 degrees angle c is 110 degrees