WASL Test Question: Download WASL PDF

How many solutions are there to the equation x2 - 15 = 0 ?

0
1
2
4
15

Answer: C

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Which of the following is equivalent to (x)(x)(x)(x), for all x ?	A circle with center (-3,4) is tangent to the x-axis in the standard (x,y) coordinate plane. What is the radius of this circle?