What are multiples of the factors of 15

Leo has b boxes of pencils. each box contains 6 pencils. he has a total of 42 pencils. the equation that represents this situation the value of b that makes the equation true the first one is b+6=42,6b=42,b=42+6,or 42b=6 the second one are 7,836 48

Is the square root of 4 plus the square root of 16 rational?

An ulcer medication has 300 milligrams in 2 tablets. how many milligrams are in 3 tablets?