I'm not sure what you're asking for, but I think this should be the answer:
In he number 913,256, 913 comprises the THOUSANDS period.
Focus: ( 4, 1 )
Directrix: y = 5
The vertex is always half of a distance between the focus and the directrix.
The vertex must be at: ( 4, 3 ), h = 4, k = 3
|p| is the distance between the vertex and the directrix ( which is over the vertex and p is negative ). p = - 2
The equation:
( x - h )² = 4 p ( y - k )
( x - 4 )² = -8 ( y - 3 )
The Mans age is 41 sorry I can't give me expression
Associative Property of Multiplication
a* (b*c) = (a*b) *c
Choice A