1. find a value of (n) to make each statement true:
22times n= the answer between 80-85 show your work?
Write this:
80 < 22n < 85
Divide all three isdes by 22
80/22 < 22n/22 < 85/22
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3.63 < n < 3.863
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Now pick a value of n between 3.63 and 3.863, say n = 3.7 or
n = 3.8. Either one will do. Check n = 3.7: If n = 3.7,
then 22n = 22(3.7) = 81.4 which is between 80 and 85. Check
n = 3.8: If n = 3.8, then 22n = 22(3.8 ) = 83.6 which is also
between 80 and 85.
2. n times 85= the answer between 175-250 show your work?
Write this:
175 < 85n < 250
Divide all three sides by 85
175/85 < 85n/85 < 250/85
2.058823529 < n < 2.941176471
Now pick a value of n between 2.058823529 and 2.941176471,
say n = 2.1 or n = 2.9. Either one of these or any of these
2.2, 2.3, ... 2.8 will do. Check n = 2.1: If n = 2.1, then
85n = 85(2.1) = 178.5 which is between 175 and 250. Check
n = 2.9: If n = 2.9, then 85n = 85(2.9) = 246.5, which is also
between 175 and 250
3. 142 times n= the answer is between 150-180 show your work?
4. n times 77= the answer is between 80-150 show your work?
These are done the same way.
Edwin
AnlytcPhil@aol.com
