Two sisters, Bethany and Dana, decide to invest for their retirement. They both expect to retire in 40 years. The following graph shows their investment.
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Two sisters, Bethany and Dana, decide to invest for their retirement. They both expect to retire in 40 years. The following graph shows their investment. The Investments of Bethany and Dana 50000 40000 Bethany 30000 Total Amount of Investment (5) 20000 Dana 10000 20 40 6 Time (years) a) Describe the rates of change for each person using words like increasing constant, or zero rate of change. (4 marks) Copyright 2018 The Ontario Educational Communications Authority Alerved TVOLC MARC Unit 1: Mathematical modelsment of learning Teacher marted b) The following phrases can be used to describe the sisters investments. Use all of the phrases by placing the phrase under the correct sister's name in the following table. Use each phrase only once to describe the sisters' Investment. Include reasons for matching the phrase to that sister. (4 marks) • Had $2500 to invest . Invested at 8% compound interest Invested at 8% simple interest . After 20 years the investment improved to 11% simple interest. Stored her money under the mattress for two years, then invested it Had $5000 to invest