What is one thing you can look for to determine quickly if a print source may be to you?

date of publication
page layout
publisher information
table of contents

people are saying it isnt d, but idk

it is Table of Contents D.

i dont know

step-by-step explanation:

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,