enter 17) 17) Which of the following is NOT an explanation for the shape of the aggregate demand curve? A) real balance effect B) interest rate effect C) investment effect D) open economy effect 18) 18) When the price level declines A) the interest rate rises, and consumers borrow fewer funds, which causes a movement up the aggregate demand curve. B) interest rates fall, and consumers borrow more funds, which causes the aggregate demand curve to shift to the left. C) the interest rate is not affected, so there is no movement along the aggregate demand curve D) the interest rate falls, and consumers borrow more funds, which causes a movement down along the aggregate demand curve. 19) 19) If your income stays the same and the price level increases, you will buy fewer goods and services due to the A) interest rate effect. B) real-balance effect. C) open economy effect. D) aggregate balances effect