Please find the Perimeter of the image

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

Use the data on the dot plot to answer the question.how many people read for more than three hours last week? i'm on a unit test review

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much