Yo can anyone help me with this Im confused​

What values of c and d make the equation true?

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.

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?