Answer
all real numbers
Work Step by Step
$-2(6+s)\geq-15-2s\longrightarrow$ multiply using the distributive property
$-12-2s\geq-15-2s\longrightarrow$ add 2s to each side
$-12-2s+2s\geq-15-2s+2s\longrightarrow$ add
$-12\geq-15$
Since -12 is greater than or equal to -15, the solution is all real numbers.
