Question

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Answer 1

Bret had a rectangular piece of plywood with dimensions x feet and 10 feet. He put a frame along 15 feet of the edge of the plywood.
An expression is shown below:

(2x + 20) - 15

Part A: What does the expression represent?

Part B: What does 2x + 20 represent?

Part C: What does 2x represent?

@ilovewolf @Smita12

Answer 2

The equation represents the perimeter of the frame EXCLUDING the the frame.
2x+20 represents the perimeter INCLUDING the frame.
2x...I think is the sum of the widths.