How many die makes a wall of dice

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

Ling listed all of the factors of a mystery number: 1,2,4,8,16,32 what is the mystery number?

Labc is reflected across x = 1 and y = -3. what are the coordinates of the reflection image of a after both reflections?