(27)
we are given
[tex] 5x+34<54 [/tex]
we need to check for x=12
so, we can plug x=12
[tex] 5*12+34<54 [/tex]
[tex] 60+34<54 [/tex]
[tex] 94<54 [/tex]
we know that 94 is always greater than 54
so, this is FALSE
(28)
[tex] 8.5\leq s-12 [/tex]
we have to check at s=20.5
we can plug it
[tex] 8.5\leq 20.5-12 [/tex]
[tex] 8.5\leq 8.5 [/tex]
we know that
8.5 is equal to 8.5
so, this is TRUE..........Answer
