- A
- B
- C
- D
Step-by-Step Solution
1 chair: 80; 2 chairs: 86; 3 chairs: 92. Height = counts 6 cm for the first chair too.)
Answer: D)
One plastic chair is 80 cm tall. Each extra chair stacked on top adds 6 cm to the height. Which rule gives the height of a stack of n chairs?
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