Answer:
strong demand for investment funds will push interest rates upward.
Step-by-step explanation:
Since the economy is booming, the demand for investment funds will be very large, even if the economy is not operating beyond its long run capacity. Just the mere fact that the economy is growing will result in an increase in the demand for money, and the price of money is interest. If the quantity demanded increases, then the price of money (interest rates) will also increase. This affects both the demand for investment funds and credit for consumption.
On the other hand, if the economy is declining, the demand for money decreases, resulting in lower interest rates.