6. Exponential functions are useful in business and economics. Lesson 7 discusses them. Show how the values are entered into your functions and also calculate the amounts of each of the following: al. You learn on the business channel that inflation was about 0.25% last month. Assume this rate is maintained each month for a year. What will the annualized rate be? EXAMPLE: A rate of 0.1% per month represents (1 +0.001)2 -1 -0.0121 or 1.21% annually. a2. A power utility estimates that power consumption grew at an annual rate of 7% last year. What average monthly rate does this represent? Example: A 2% growth rate for the year would require 1.02 = (1 + r)"? Solve this for r = V1.02 -1; r= .00165 which is 0.165% per month. bl. F = Pe which assumes continuous compounding, says that the Future value (F) of an amount (P) invested today at an annual rate (t), expressed as a decimal for the time (t), in years is given by the function. EXAMPLE: invest $100 at the annual rate of 5 1/2% for 6 years and 3 months and you should get back at the end of the time), F = $100(0,0556.25) = $100(0.3438) $100(1.4102) = $141.02. If I deposit $10000 into my savings account that pays a 4 1/2% rate of interest per annum for 6 years and 3 months, what should I get back at maturity? b2. Alternatively, if a borrower tells you that he needs a loan for 6 years and 3 months and will pay you an annual rate of 5 1/2% for the loan, but will give you only $141.02 back at the end of the loan term, you should only loan him $100 today. Here is a loan proposition more in line with current interest rates. A borrower agrees to pay you 4% annually for 5 years and 6 months. At the end of the term, he will make a balloon payment of $20000 to repay the loan and the interest. What amount (P) does the formula P-Fle" indicate you should loan this prospect