Need help on these questions.

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

What is the perimeter of an isosceles triangle with each leg measuring 2x+3 and the base measuring 6x-2?

Which is the graph of the following inequality?