Find the values of the variables
[-12 -w^2] = [2k -81]
[2f 3 ] [-14 3]

go step by step so i can understand.

Looks like you're given an equality between two matrices,

Two matrices are equal if the entries in the same positions (row and column) are equal. This means

We can ignore the last one, since it's clearly true. For the remaining, we get

from the sentence, "tomorrow morning, akiko will arrive an hour late" depicts a third person perspective because it doesn't use any pronoun to replace akiko, the subject of the sentence, and it is in singular form since akiko is only one person.