Please show all working (step by step) of the solutions so I can double check it with my answers.

Please show all working (step by step) of the solutions so I can double check it with my answers. Please type it on a computer as well as the graphs (type letters such as x or y or numbers or letters if possible. If it is not possible to type it on computer with graphs, please draw it by hand following the solution on the same question). Please use white paper or lined paper but nothing at the back of the paper. Please scan and upload it at the end. Thank you.