For this case we have to:
Given the quadratic equation of the form:
The roots are given by:
If we have:
We can rewrite it in the following way:
Where:
Where we have:
By definition:
Thus, the roots are given by imaginary numbers:
Answer:
5. Isabella is calculating the interest earned on a deposit of $3,000 in an account that earns 4% simple interest after 6 years.
I = prt I = 3,000(.04)(6) I = 3,720 a. Isabella determines that her deposit will then be worth $6,720.00. Explain what Isabella did incorrectly b. What is the correct amount of interest? 
1 answer:
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