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January 30, 2015

January 30, 2015

Posted by **hips** on Thursday, April 25, 2013 at 10:39pm.

a. 85≤83+91+n/3 ≤90; 81≤n≤96

b. 85≤83+91/2+n≤90; -2≤n≤3

c. 90≤83+91+n/3 ≤85; 96≤n≤81

d. 83≤85+91+n/3 ≤90; 73≤n≤94

i don't understand this question

- algebra 1 help please -
**Bosnian**, Thursday, April 25, 2013 at 10:49pmAverage of three quizzes :

Av = ( 83 + 91 + n ) / 3

must be equal or greater of 85 and equal or less of 90

85 <= ( 83 + 91 + n ) / 3 <= 90

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