Prompt (Word-for-word): "By factoring the numerator and denominator simplify the following rational expressions as much as possible and write your final answer as a single reduced fraction."

The first image is the question I was having trouble with and the second image is my work and final answer. I feel a little uncertain of it and I just want to know if I did it correctly. If I didn't then please let me know. This isn't just homework it's also review for an exam so I need to know if I'm doing this right.

I'm following instructions for a science project but immediately ran into a big issue due to the tutorial being on an ancient version of Excel (2003) I was able to find the format axis by clicking the X axis on my graph but couldn't find the scale option. Help please

diagram represents a cell with chlorine, potassium and sodium channels.

(the work i did on the paper is probably not correct please ignore)

can someone explain how to do questions 6 and 7 please?

I don't have the time, and I'm struggling to see how I'd get the displacement. Please, could anyone steer me in the right direction?

Hi everyone,
I’m currently working on an AWS CloudFormation project for university and I’m struggling with configuring the security groups and network access for my RDS database instance.
I’m trying to allow traffic from my web application to the RDS instance on the database port (5432 for PostgreSQL), while also allowing management traffic where needed.
I’ve been trying to configure this through my CloudFormation YAML template, but I’m having difficulty understanding how to set up the correct inbound and outbound security group rules without causing connectivity or deployment issues.
I’ve looked into VPCs, security groups and routing, but I’m still unsure what I’m missing.
Has anyone worked on something similar or experienced these issues before? I’d really appreciate some guidance on what I should check or how to approach fixing this.
Thanks in advance!

I am studying AQA English Literature at Year 13 and my grades have dropped from a B to an E, I don't know what I am doing wrong as my teacher gives a vague information on things to improve on.

I need specific instructions, not vague, pls.