At a interest rate people would hold less cash money and keep more funds invested to take advantage of the interest rate..

At a high interest rate people would hold less cash money and keep more funds invested to take advantage of the high interest rate.

a progressive tax is a tax that imposes a lower tax rate on low-income earners compared to those with a higher income, making it based on the taxpayer's ability to pay. that means it takes a bigger percentage from high income earners than it does from low income people.