Part A: The total area = x² + 12x + 20 = (x+2)(x+10) <span>The width = x+2 ∴ Length = area / width = </span>[ <span>(x+2)(x+10) ] / (x+2) = x+10
Part B: </span> <span>A 2-foot walkway is built around the fountain </span> <span>∴ The width = (x+2) + 2 + 2 = x + 6 The length = (x+10) + 2 + 2 = x +14
Part C: </span><span>the total area covered by the fountain and walkway.
</span><span> = (x+6)(x+14) = x² + 20 x + 84