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A camp counselor needs no more than 30 campers to sign up for two mountain hikes. The counsler needs at least 10 campers on the low train and at least 5 campers on the high trail. Write a system of inequalites to model the situation, graph, and solve.

 Aug 28, 2014

Best Answer 

 #1
avatar+129840 
+10

Call x the number of campers on the low trail and y the number of campers on the high trail.

So we have

x + y  ≤ 30

x ≥10

y ≥ 5

This has many solutions....(10, 20) (11, 19) (12, 18) ( 13, 17).....etc.......(24,6)  (25, 5)

We can graph this...but there will be many "solution" points that aren't whole numbers - and thus - aren't really a part of the solution set because we can't have "part" of a person !!!

The 'graph' is here........https://www.desmos.com/calculator/mxbludbhfr

Tthe solution set lies along the "hypoteneuse" of the grey triangle in the middle of the graph and consists of the points in which x and y are both whole numbers !!!

 Aug 28, 2014
 #1
avatar+129840 
+10
Best Answer

Call x the number of campers on the low trail and y the number of campers on the high trail.

So we have

x + y  ≤ 30

x ≥10

y ≥ 5

This has many solutions....(10, 20) (11, 19) (12, 18) ( 13, 17).....etc.......(24,6)  (25, 5)

We can graph this...but there will be many "solution" points that aren't whole numbers - and thus - aren't really a part of the solution set because we can't have "part" of a person !!!

The 'graph' is here........https://www.desmos.com/calculator/mxbludbhfr

Tthe solution set lies along the "hypoteneuse" of the grey triangle in the middle of the graph and consists of the points in which x and y are both whole numbers !!!

CPhill Aug 28, 2014

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