If a = 105 and a^3 = 21 × 25 × 45 × z, what is the value of z? Select
A) 35	B) 42	C) 45	D) 49	E) 54
a=105 = 3* 5 *7   a^3 = 21 × 25 × 45 × z   =&gt; a^3 = (7*3) x (5*5) x ( 3^2 * 5) x z   =&gt; a^3 = 3^3 * 5^3 * 7 x z   =&gt;( 3* 5 *7) ^3 = 3^3 * 5^3 * 7 x z   z = 7^2 = 49   Answer 49
<result>D</result>
If a = 105 and a^3 = 21 × 25 × 45 × z, what is the value of z?