Variable lessons
If I need at least enough wood to span 60 inches of distance, and I have planks that are 12 inches long each, then at least how many planks do I need?
I can set up the following equation:
12 x >= 60
where x is the number of planks I need, 12 is the number of inches per plank, and greater than or equal to 60 indicates the minimum span I need to cover with the planks.
We can divide both sides by 12, and the result is this:
x >= 5
Therefore, we need at least 5 planks.
I can set up the following equation:
12 x >= 60
where x is the number of planks I need, 12 is the number of inches per plank, and greater than or equal to 60 indicates the minimum span I need to cover with the planks.
We can divide both sides by 12, and the result is this:
x >= 5
Therefore, we need at least 5 planks.
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