Jerry was using matrices to solve the system of three equations. He has shown all his steps. Did he make a mistake if so in what step.

You have to find the angle i don’t know if i i try

Idon’t get what to wear lol i ok i’m so sorry but whatever lol omg was my mom like

The question is kind of confusing. if it's asking how many variations of answers can you give. then do 4^5 for your answer.this would be something like the first question could be a and the 2nd c or first b next c etc. if you can, ask the teacher for a better confirmation of what it's asking. if i'm assuming correctly what it's asking, it's 625 different variations.