Solve.

–3t ≥ 39

A.
t ≤ 13

B.
t ≥ –13

C.
t ≥ 13

D.
t ≤ –13

Question

Solve.
 
–3t ≥ 39
 
 A.
t ≤ 13
 
 B.
t ≥ –13
 
 C.
t ≥ 13
 
 D.
t ≤ –13

hero · Answer

1. Add 3t to both sides
2. Subtract 39 from both sides
3. Divide both sides by 3

anonymous · Answer

just divide by -3 and switch the sign.  it would end up being t<-13 so D.

anonymous · Answer

Would I divided both sides by -3 or just the final answer?

anonymous · Answer

well yeah, you divide -3 by itself (-3) so you can cancel it out and get t by itself. Then you divide 39 by -3 so you can get your answer. Remember you have to switch the sign at the end because you divided with a negative number.

hero · Answer

-39 ≥ 3t
-39/3 ≥ t
-13 ≥ t
t ≤ -13

tkhunny · Answer

You don't have to "remember to switch", if you listen to @Hero

anonymous · Answer

oh ok, Thank you :)

anonymous · Answer

no problem