You can put this solution on YOUR website! The area of all rectangles is found by length times width. Since your rectangle has a length of (3x-4) and a width of (2x+7), its area will be
(3x-4)*(2x+7)
Just use FOIL to multiply this out. (Note: You will not get a number. You will get an expression with numbers and x's. Your answer will this expression after you simplify it.)