Answer: 9b+4n+6d+7
Step-by-step explanation:
1. 9b+9+4n−4+6d+2
2. 9b+4n+6d+(9-4+2)
3. 9b+4n+6d+7
Answer: y2-1/y-4y+4
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Step-by-step explanation:
You can choose one of the prices above to find the proportion.

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Answer:
x=-9
Step-by-step explanation:
5x+1=7x+19
1 = 7x-5x +19
1-19 = 2x
-18/2 = x
x = -9
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Answer:
Step-by-step explanation:
Interest earned during the rest of 2 years and 6 months
40 + 40 + 40 = 120
he will be getting 1000 at the time of maturity ie after 2.5 years .
Total receipt = 1000 + 120 = 1120
investment made = 820
total receipt earned = 1120
profit made = 300
time = 2.5 years
profit = investment x rate of intt x time / 100
300 = 820 x r x 2.5 / 100 where r is rate of interest
r = 30000 / 820 x 2.5
= 14.63 % .