Y + 4x = 8
y = 8 - 4x
substitute 8 - 4x for y in the other equation.
5x + 2(8 - 4x) = 13
5x + 16 - 8x = 13
-3x = -3
x = 1
y = 8 - 4(1) = 4
Answer:
$4080
Step-by-step explanation:
We have the amount she will pay back, but first, we need to find the Interest accrued.
Simple Interest is given as:
![I = \frac{P * R * T }{100}](https://tex.z-dn.net/?f=I%20%3D%20%5Cfrac%7BP%20%2A%20R%20%2A%20T%20%7D%7B100%7D)
where P = principal
R = rate
T = time taken (in years)
Therefore, the interest on $3,000 at 9% simple interest for 4 years is:
![I = \frac{3000 * 9 * 4}{100}](https://tex.z-dn.net/?f=I%20%3D%20%5Cfrac%7B3000%20%2A%209%20%2A%204%7D%7B100%7D)
I = $1080
Therefore, the amount she will pay back is:
$3000 + $1080 = $4080
Answer: The answer is $15.86
Step-by-step explanation: You would change 6.10 into a fraction, which is 61/10. Then you would mulitply that and that number as a decimal would be 15.86.
Answer:
D!
Step-by-step explanation: