Please show the steps on how to solve this!

The key here is to understand the question is asking about mean, or average value (sum of all values divided by the number of values).

On the first example, he has $9, as the average of 8 and 10 is 9.

On the second, he has 8.5.

The formula is half of the sum of Mr Padilla and Mr Brock's money, or the average of their money.

the correct answer is the second option

step-by-step explanation:

given that there are two triangles j'k'l' and jkl>

the former is got by dilating the second one.

when drawn on a grid, (graph paper) coordinates of vertices of first triangle is

(6,12)j, (9,6)k and (12,9)l

side jk has length = distance between j and k

=

side j'k'=distance between j' and k'

=

ie j'k'l' has sides 1/3 of that of corresponding sides of jkl.

hence scale factor of 1/3 is used to get j'k'l'from jkl