Using simple interest, it is found that Devin will pay $60,125 altogether.
The amount paid in <u>simple interest</u> is:
In which:
- P is the principal.
- r is the interest rate, as a decimal.
- t is the time, in years.
In this problem:
- Owes $26,000 in student loans, thus
- Interest rate of 8.75%, thus
- Paid off in 15 years, thus
.
The amount he will pay is of:
![A = 26000[1 + 0.0875(15)]](https://tex.z-dn.net/?f=A%20%3D%2026000%5B1%20%2B%200.0875%2815%29%5D)
Devin will pay $60,125 altogether.
A similar problem is given at brainly.com/question/13176347
Answer:
2π
Step-by-step explanation:
When a circle's radius is 1—called a unit circle—its circumference is 2π.
Two equal roots means a discriminant of zero.
(k + 2)x² + 4k = (4k + 2) x
(k + 2)x²- 2 (2k + 1) x + 4k = 0
When we have an even linear term it's easier to generate 1/4 of the usual discrimant,
0 = d/4 = (b/2)^2 - ac = (2k + 1)² - 4k(k+2) = 4k² + 4k + 1 - 4k² - 8k = -4k + 1
4k=1
k=1/4
Answer: k=1/4
Check:
(k + 2)x² + 4k = (4k + 2) x
(9/4)x² - 3x + 1 = 0
9x² - 12x + 4 = 0
(3x - 2)² = 0
A perfect square, two equal roots, good
