Presented is an interactive PASCAL computer program that computes the true mortgage interest rate. The half-interval technique, a method from numerical analysis, is incorporated into the program algorithm to approximate a solution of a continuous function on a closed interval. (JJK)

Information about the effect of changes in interest rates and the length of repayment on mortgages is available through the use of this loan and mortgage spreadsheet program designed for use on Apple computers. It is especially designed to help people evaluate the relative advantages of a variable rate mortgage with a low initial rate of interest…

Discusses the use of technology in solving compound interest-rate problems that can be modeled by linear relationships. Uses a graphing calculator to solve the specific problem of determining the amount of money that can be borrowed to buy a car for a given monthly payment and interest rate. (MDH)