Which graph shows the solution to this inequality? 3r + 2(12r + 7) ≤ 5r – 8
Answers
22r<-(-22)
r<-1
To solve the inequality, we first simplify the left-hand side:
3r + 2(12r + 7) ≤ 5r – 8
3r + 24r + 14 ≤ 5r – 8 [Distribute the 2]
27r + 14 ≤ 5r – 8
27r ≤ -22r – 22 [Subtract 5r and 14 from both sides]
49r ≤ -22 [Add 22r and 22 to both sides]
r ≤ -22/49
The solution to the inequality is all the values of r less than or equal to -22/49.
This can be represented on a number line as a closed circle at -22/49 and shading to the left.
The graph of the solution is:
------•================================================>
-22/49
The circle at -22/49 indicates that -22/49 is included in the solution, and the shading to the left indicates that all values of r to the left of -22/49 are also solutions to the inequality.
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