please answer question 4.. data provided below

1)

PRESENT WORTH = 2300

2) DEPRECIATION= 1800 (1000-500/8)

SLD
YEAR	OPERNING BALANCE	DEPRECIATION	CLOSING BALANCE
1	10000	1188	8812
2	8812	1188	7624
3	7624	1188	6436
4	6436	1188	5248
5	5248	1188	4060
6	4060	1188	2872
7	2872	1188	1684
8	1684	1188	496

3)

			SOYD
YEAR	OPERNING BALANCE	FRACTION			DEPRECIATION	CLOSING BALANCE
1	10000	8		0.222222	2111.111	7888.889
2	7888.889	7		0.194444	1847.222	6041.667
3	6041.667	6		0.166667	1583.333	4458.333
4	4458.333	5		0.138889	1319.444	3138.889
5	3138.889	4		0.111111	1055.556	2083.333
6	2083.333	3		0.083333	791.6667	1291.667
7	1291.667	2		0.055556	527.7778	763.8889
8	763.88	1		.0277777	263.88	500
		36			9500

DEPRECIATION= 10000-500*8/36= 2111

4)

DDB
YEAR	OPERNING BALANCE	DEPRECIATION	CLOSING BALANCE
1	10000	2500	7500
2	7500	1875	5625
3	5625	1406.25	4218.75
4	4218.75	1054.688	3164.063
5	3164.063	791.0156	2373.047
6	2373.047	593.2617	1779.785
7	1779.785	444.9463	1334.839
8	1334.839	333.7097	1001.129

DEPRECIATION= 100/8= 12.5%

UNDER DDB= 12.5*2= 25%

5)

MACRS
YEAR	OPERNING BALANCE	DEPRECIATION	CLOSING BALANCE
1	10000	2500	7500
2	7500	1875	5625
3	5625	1406.25	4218.75
4	4218.75	1054.688	3164.063
5	3164.063	791.0156	2373.047
6	2373.047	593.2617	1779.785
7	1779.785	444.9463	1334.839
8	1334.839	333.7097	1001.129

DEPRECIATION= 2500(1000*1/8*200%)

3. A mining company invests $10,000 in equipment that will result in a $3,000 annual revenue stream for 8 years. Annual expenses are $700, salvage $500 after 8 years and the MARR 9% . The corporation expects to pay 53% of its revenue in income tax. What is a) The before-tax present worth ? b) Calculate the SLD deprecation schedule c) Calculate the SOYD deprecation schedule d) Calculate the DDB deprecation schedule e) Calculate the MACRS deprecation schedule