Answer:
20.7 --> 21
9.18 --> 9
21x9 is 189, thus the estimated product is 189.
Let me know if this helps!
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Add all the numbers together to find the total amount of college students surveyed.
355 + 292 + 280 + 191 + 198 + 136 + 66 + 24 = 1,542
The number is already simplified considering it's a whole number. The answer is either 1,542 or 1,500
<em>(I say either because when it says to simplify I'm not sure if they want it to be rounded.)</em>
Combine like terms.
4x^3 -6x^3= -2x^3
-8x^2 +2x^2= -6x^2
Answer = -2x^3 -6x^2 +4