y-12[tex]\geq[/tex]-3y+3
add 12 to both sides
y [tex]\geq[/tex]-3y+15
add 3y to both sides
4y[tex]\geq[/tex]15
divide both sides by 4
y[tex]\geq[/tex]3.75 (or 3 and 3/4)
hope this helps!
