Please help i dont understand what I’m supposed to do and how to solve it

27 is what percent of 108? 27 is % of 108

What is the value of x in the equation7x+2y=48 when y=3

Jorge wants to determine the enlarged dimensions of a digital photo to be used as wallpaper on his computer screen. the original photo was 800 pixels wide by 600 pixels high. the new photo will be 1,260 pixels wide. what will the new height be?