A rectangular painting's width is 6 less than twice its length. Given that the perimeter of the painting is 84 inches, select all statements that are true.

(i'm looking for an explanation, thanks)

If you roll two fair dice (one black die and one white die), in how many ways can you obtain a 4 on at least one die?

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

Which describes the difference between the graph of f(x)=x^2 and g(x)=-(x^2-2)