## 3/9/11

### Test 4 Section 6 - #7 (page 595)

The solution to this one comes from simplifying the radical you're given. There's a perfect square in 18 that we can take out: 9. So if you simplify the radical, you get:

Now r can be 54, and t can be 2. (54)(2) = 108, so our answer is (C).