when the positive integer x is divided by 9 , the remainder is 5 . what is the remainder when 4 x is divided by 9 ?
"i tried plugging in numbers x = 9 q + 5 x = 14 4 x = 56 4 x / 9 = 9 * 6 + 2 remainder is 2 . answer is c"
reminder(multiply(5, 4), 9)