If 5^z × 5^y = (125)^4, then what two values will satisfy z and y such that it equals the value of 125^4?  Choose one:
A) 1, 5
B) 2, 3
C) 5, 7
D) Both A and B
E) Neither of the Above
5^z × 5^y = (125)^4   5^(z+y) = 5^12   since base is same, we can equate powers:   z+y =12   There are several values that can work, (i.e. 4 and 8, 3 and 9, 1 and 11, but the only one that works in the options given is C   Ans. 5, 7) 5, 7
<result>C</result>
If 5^z × 5^y = (125)^4, then what two values will satisfy z and y such that it equals the value of 125^4?