Answer:
First answer = 36
Second answer = 9
Third answer =1/4
Step-by-step explanation:
Step-by-step explanation:
Substituting into vertex form, the equation is:
y = a(x-3)^2 + 5
The y-intercept is when x=0, so substituting this in,
1=a(0-3)^2 + 5
-4 = 9a
a=-4/9
X=15 I think .... sorry if I’m wrong
So hmm notice the picture below
running a segment from the right-angle perpendicular to the opposite side, gives three similar triangles, one small, a medium and a large one
now, using proportions, you can simply

and solve for "x"
A. 8^9/2= around 11585.2375; (sqrt8)^9= around 11585.2375. So choice A shows a pair of equivalent expressions.
B. (3sqrt125)^9=1,953,125; 125^9/3=1,953,125. So choice B also shows a pair of equivalent expressions.
C. 12^2/7= around 2.03394; (sqrt12)^7= around 5,985.96759. So choice C does not show a pair of equivalent expressions.
D. 4^1/5=around 1.31951; (sqrt4)^5=32. So choice D also doesn't show a pair of equivalent expressions.
Your answers are A and B.
I hope this helps ;)