AF 502 Build functions and write expressions, equations, or inequalities with a single variable for common pre-algebra settings (e.g., rate and distance problems and problems that can be solved by using proportions)
(Score range 28–32) AF 702 Build functions and write expressions, equations, and inequalities when the process requires planning and/or strategic manipulation
CCRS A 508 covers the underlying facts. A 602 and AF 702 are closer to what is needed to do this problem. Our skill covers the special products of binomials that this problem is hinting at.