Step-by-step explanation:
1) 9x - (-5 + 6x) = 9x + 5 - 6x
Solving like terms
3x + 5
2) 9x - 5 - 6x
3x - 5
3) 9x - 6x + 5
3x + 5
4) 9x - 6x - 5
3x - 5
5) 9x - (-6x + 5)
9x + 6x - 5
15x + 5
2 and 4 are the expressions
The answer is: " 100 cultures " .
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Take the number of the day we are at (from the beginning; in this case, "9" (for "Day 9").
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Then add "1" to that number (in this case, " 9 + 1 = 10" .
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Then, take that value (in this case, "10"); and "square" that value ; (in this case; " 10² = 10 * 10 = 100 . This is the answer.
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The answer is: " 100 cultures " .
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<u>Note</u><u>:</u> We get this steps by noticing the trend from the information provided.
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