URGENT someone please help i dont get this

The value √10 and √15 are plotted on the number line

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

Janet drove 300 miles in 4.5 hours. write an equation to find the rate at which she was traveling