Look at each system of equations. Consider which method you would use to solve this problem. For which systems is the method of substitution the best choice? Circle all that apply.

The perimeter of a rectangle is 42 inches. if the width of the rectangle is 6 inches, what is the length

Acd that is originally priced at $15.85 red-tagged for the sale. what is the sale price of the cd

Aprofessional hockey team has noticed that, over the past several seasons, as the number of wins increases, the total number of hot dogs sold at the concession stands increases. the hockey team concludes that winning makes people crave hot dogs. what is wrong with the hockey team's conclusion? a) it does not take into account the attendance during each season. b) it does not take into account the number of hamburgers sold during each season. c) it does not take into account the number of concession stands in the hockey arena. d) it does not take into account the number of seasons the hockey team has been in existence.