Table of contents
- 0. Review of Algebra4h 16m
- 1. Equations & Inequalities3h 18m
- 2. Graphs of Equations43m
- 3. Functions2h 17m
- 4. Polynomial Functions1h 44m
- 5. Rational Functions1h 23m
- 6. Exponential & Logarithmic Functions2h 28m
- 7. Systems of Equations & Matrices4h 6m
- 8. Conic Sections2h 23m
- 9. Sequences, Series, & Induction1h 19m
- 10. Combinatorics & Probability1h 45m
1. Equations & Inequalities
Linear Equations
3:28 minutes
Problem 60
Textbook Question
Textbook QuestionWork each problem. Levada borrows $30,900 from her bank to open a florist shop. She agrees to repay the money in 18 months with simple annual interest of 5.5%. (a)How much must she pay the bank in 18 months?
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Simple Interest Formula
The simple interest formula calculates the interest earned or paid on a principal amount over a specific period. It is expressed as I = PRT, where I is the interest, P is the principal amount, R is the annual interest rate (as a decimal), and T is the time in years. This formula is essential for determining how much interest Levada will owe on her loan.
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Principal Amount
The principal amount is the initial sum of money borrowed or invested, before any interest is applied. In this scenario, Levada's principal is $30,900, which is the amount she needs to repay along with the interest accrued over the 18-month period. Understanding the principal is crucial for calculating the total repayment amount.
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Time Conversion
Time conversion is necessary when dealing with interest calculations, especially when the time period is not in years. Since the loan term is given in months (18 months), it must be converted to years for the simple interest formula. This is done by dividing the number of months by 12, resulting in 1.5 years for this problem.
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