Question

Solve the inequality and graph its solution: –7 < 2s + 5 < 15

Answer 1

-7 < 2s + 5 2s + 5 <15
-5-7 < 2s 2s < 15 - 5
-12 < 2s 2s < 10
-12/2 < s s < 10/2
-6 < s s < 5

so we have s is less then 5 and greater then -6 ....(-6 < s < 5)
open circle on -6, open circle on 5, shading in between

Answer 2

any questions ?