A farmer sets up 2 corn mazes for a fall festival, as shown in this model. (There is 5 light orange squares and 15 dark orange squares.)
Which equivalent expressions are represented by the model? Check all that apply.
A. 15 + 5 } B. 3 + (5 + 1) } C. 3(5 + 1) } D. 5(3 + 1) } E. (5)(3) + (5)(1)