Anyone wanna help? Ty <3

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

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?

Find the area of the unshaded square