Mark and Robyn used base-ten blocks to show that 200 is 100 times as much as 2 whose model makes sense? Whose model is nonsense? Complete the explanation.

Mark's model is nonsense

Step-by-step explanation:

- Both Mark and Robyn used "based-ten blocks" to show that 200 is 100 times 2.

- Marks model shows 20 instead of 2.

- His model shows 200 is 10 times as much as 20. It does not make any sense.

- Robyn model shows 2 correctly, implicating 200 is 100 times as much as 2.

- Because,

                        2 * 100 = 200

So Mark's model is nonsense!

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a. positive: 2 or 0; negative : 2 or 0; complex: 4or2or0