Chapter 8: Problem 31
In Exercises \(21-34\), express each percent as a decimal. \(5 \frac{5}{8} \%\)
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Chapter 8: Problem 31
In Exercises \(21-34\), express each percent as a decimal. \(5 \frac{5}{8} \%\)
These are the key concepts you need to understand to accurately answer the question.
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Suppose that you drive 15,000 miles per year and gas averages \(\$ 3.50\) per gallon. a. What will you save in annual fuel expenses by owning a hybrid car averaging 60 miles per gallon rather than an SUV averaging 15 miles per gallon? b. If you deposit your monthly fuel savings at the end of each month into an annuity that pays \(5.7 \%\) compounded monthly, how much will you have saved at the end of six years?
Describe two advantages of using credit cards.
Exercises 1-2 involve credit cards that calculate interest using the average daily balance method. The monthly interest rate is \(1.5 \%\) of the average daily balance. Each exercise shows transactions that occurred during the March \(1-\) March 31 billing period. In each exercise, a. Find the average daily balance for the billing period. Round to the nearest cent. b. Find the interest to be paid on April 1, the next billing date. Round to the nearest cent. c. Find the balance due on April 1 . d. This credit card requires a \(\$ 10\) minimum monthly payment if the balance due at the end of the billing period is less than \(\$ 360\). Otherwise, the minimum monthly payment is \(\frac{1}{30}\) of the balance due at the end of the billing period, rounded up to the nearest whole dollar. What is the minimum monthly payment due by April 9 ? $$ \begin{array}{|ll|c|} \hline \text { Transaction Description } & \text { Transaction Amount } \\ \hline \text { Previous balance, } \$ 7150.00 & \\ \hline \text { March } 1 \quad \text { Billing date } & & \\ \hline \text { March } 4 \quad \text { Payment } & \$ 400 \text { credit } \\ \hline \text { March 6 } \quad \text { Charge: Furniture } & \$ 1200 \\ \hline \text { March } 15 \quad \text { Charge: Gas } & \$ 40 \\ \hline \text { March } 30 & \text { Charge: Groceries } & \$ 45 \\ \hline \text { March } 31 & \text { End of billing period } & \\ \hline \text { Payment Due Date: April } 9 & \\ \hline \end{array} $$
Suppose that you are thinking about buying a car and have narrowed down your choices to two options: The new-car option: The new car costs \(\$ 28,000\) and can be financed with a four-year loan at \(6.12 \%\). The used-car option: A three-year old model of the same car costs \(\$ 16,000\) and can be financed with a four-year loan at \(6.86 \%\). What is the difference in monthly payments between financing the new car and financing the used car?
Describe why a buyer would select a 30 -year fixed-rate mortgage instead of a 15 -year fixed-rate mortage if interest rates are \(\frac{1}{4} \%\) to \(\frac{1}{2} \%\) lower on a 15 -year mortgage.
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