When the positive integer x is divided by 9,the remainder is 5.What is the remainder when 5x is divided by 9?  Options:
A) 0  B) 1  C) 3  D) 4  E) 7
i tried plugging in numbers   x = 9q+5   x = 14   5x 9 +5= 
<gadget id="calculator">9 +5</gadget>
<output>14</output>
14   5x= 70   5x/9= 63 + 7   remainder is 7.   Answer is 7.
<result>E</result>
When the positive integer x is divided by 9,the remainder is 5.What is the remainder when 5x is divided by 9?