8th grade math, please help. I’ll give you brainliest if you want.

-Find the volume-
*links are reported*

Complete the solution of the equation. find the value of y when x equals to 28 x+3y=28

X/y + 4y/x divided by x/y - 2y/x explain as in depth as you can how you simplfied the fractions. i don't know where to start on this : /

Amir wants to proportionally increase the size of a photo to create a poster for his room. the size of the original photo is shown. complete the statement and then answer the question to represent ways that amir can increase the size of his photo.