Karina puts x dollars into an investment with an interest rate of 3 percent per year and y dollars into an investment with an interest rate of 8 percent per year. She invests a total of $7700, and her interest earnings after one year are $421. From this information, we can create two equations: one for the total investment and one for the interest earned. State both equations, and then solve the system to determine how much Katrina invested in each. The equation that describes the total investment is: The equation that describes the interest earned is: Amount invested at 3 percent interest is $__________ Amount invested at 8 percent interest is $__________
Karina puts x dollars into an investment with an interest rate of 3 percent per year and y dollars into an investment with an interest rate of 8 percent per year. She invests a total of $7700, and her interest earnings after one year are $421. From this information, we can create two equations: one for the total investment and one for the interest earned. State both equations, and then solve the system to determine how much Katrina invested in each. The equation that describes the total investment is: The equation that describes the interest earned is: Amount invested at 3 percent interest is $__________ Amount invested at 8 percent interest is $__________
Algebra and Trigonometry (6th Edition)
6th Edition
ISBN:9780134463216
Author:Robert F. Blitzer
Publisher:Robert F. Blitzer
ChapterP: Prerequisites: Fundamental Concepts Of Algebra
Section: Chapter Questions
Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...
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Karina puts x dollars into an investment with an interest rate of 3 percent per year and y dollars into an investment with an interest rate of 8 percent per year. She invests a total of $7700, and her interest earnings after one year are $421. From this information, we can create two equations: one for the total investment and one for the interest earned. State both equations, and then solve the system to determine how much Katrina invested in each.
The equation that describes the total investment is:
The equation that describes the interest earned is:
Amount invested at 3 percent interest is $__________
Amount invested at 8 percent interest is $__________
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