Graph each function. Give the domain and range. ƒ(x) = 2x+2 - 4
Table of contents
- 0. Review of Algebra4h 18m
- 1. Equations & Inequalities3h 18m
- 2. Graphs of Equations1h 43m
- 3. Functions2h 17m
- 4. Polynomial Functions1h 44m
- 5. Rational Functions1h 23m
- 6. Exponential & Logarithmic Functions2h 28m
- 7. Systems of Equations & Matrices4h 5m
- 8. Conic Sections2h 23m
- 9. Sequences, Series, & Induction1h 22m
- 10. Combinatorics & Probability1h 45m
6. Exponential & Logarithmic Functions
Introduction to Exponential Functions
Problem 53a
Textbook Question
Use the compound interest formulas A = P (1+ r/n)nt and A =Pert to solve exercises 53-56. Round answers to the nearest cent. Find the accumulated value of an investment of \$10,000 for 5 years at an interest rate of 1.32% if the money is a. compounded semiannually
Verified step by step guidance1
Identify the given values: principal P = 10,000, time t = 5 years, interest rate r = 1.32% (which should be converted to decimal form as 0.0132).
For parts a, b, and c, use the compound interest formula , where n is the number of compounding periods per year.
Calculate the accumulated amount for each compounding frequency: semiannually (n=2), quarterly (n=4), and monthly (n=12) by substituting the respective n values into the formula.
For part d, use the continuous compounding formula , substituting the values of P, r, and t.
After substituting the values into the formulas, compute the expressions to find the accumulated amounts, then round each result to the nearest cent.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Compound Interest Formula
The compound interest formula A = P(1 + r/n)^(nt) calculates the accumulated amount A after t years, where P is the principal, r is the annual interest rate, n is the number of compounding periods per year, and t is time in years. It accounts for interest earned on both the initial principal and accumulated interest.
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Continuous Compounding Formula
Continuous compounding uses the formula A = Pe^(rt), where e is Euler's number (~2.718), to find the accumulated amount when interest is compounded an infinite number of times per year. This formula models the limit of compound interest as compounding frequency increases indefinitely.
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Rounding and Financial Precision
Rounding to the nearest cent means expressing the final amount to two decimal places, reflecting typical currency format. This ensures practical financial accuracy and clarity when reporting investment values or interest calculations.
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