College Board SAT Updated book: Practice Test 4, Section 6, #5 Answer.

Test Preparation
1

<p>18√18 = r√r and rv ≠ 0, which of the following is equal to k?</p>

<p>a) 1
b) 1/x
c) x -1
d) x
e) x + 1</p>

<p>Can someone answer and explain this?</p>

2

<p>are you sure your variables are right?</p>

3

<p>oops, I meant 18√18=r√v and v ≠ r</p>

4

<p>Where’s k in the equation? Or are we looking for v?</p>