Answer:
![ED=32\ units](https://tex.z-dn.net/?f=ED%3D32%5C%20units)
Step-by-step explanation:
we know that
Applying the Intersecting Secant Theorem
![AC*BC=EC*DC](https://tex.z-dn.net/?f=AC%2ABC%3DEC%2ADC)
substitute the values
![(16+5)*(5)=(ED+3)*(3)](https://tex.z-dn.net/?f=%2816%2B5%29%2A%285%29%3D%28ED%2B3%29%2A%283%29)
Solve for ED
![(21)*(5)=(ED+3)*(3)](https://tex.z-dn.net/?f=%2821%29%2A%285%29%3D%28ED%2B3%29%2A%283%29)
![35=(ED+3)](https://tex.z-dn.net/?f=35%3D%28ED%2B3%29)
![ED=35-3=32\ units](https://tex.z-dn.net/?f=ED%3D35-3%3D32%5C%20units)
Answer:
what was the initial amount?
Step-by-step explanation:
i might need more information.
Plug in each possible value into the equation.
when m = 5
2k = m + 3
2k = (5) + 3
Simplify
2k = 8
isolate the k, divide 2 from both sides
2k/2 = 8/2
k = 8/2
k = 4
When m = 5, k = 4
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2k = m + 3
when m = 7
2k = (7) + 3
2k = 10
2k/2 = 10/2
k = 10/2
k = 5
when m = 7, k = 5
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2k = m + 3
When m = 9
2k = (9) + 3
2k = 12
2k/2 = 12/2
k = 12/2
k = 6
when m = 9, k = 6
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hope this helps