Evaluate:

4r for r=12 and s=6/s
Simplify your answer= 6/s
Is my answer right?
Thank you.

If r = 12, then 4r = 4 *12

For s = 6/s, I don't know how you get 6/s.

Multiply both sides by s.

s^2 = 6

s = sq. rt. of 6

I hope this helps. If not, repost your questions in clearer terms. Thanks for asking.