If the total tax collected by a government decreases, households' consumption spending ____, and consequently the aggregate demand _____ ; When the interest rate increases, investment ______ and consequently the aggregate demand _____ ; When the exchange rate decreases, trade balance _____ and consequently the aggregate demand increases; increases; decreases; decreases; decreases; decreases decreases; decreases; decreases; decreases; decreases; decreases decreases; decreases; decreases; decreases; increases; increases increases; increases; decreases; increases; decreases; increases