Solve.To determine the number of fish in a lake, a park ranger catches 260 fish, tags them, and returns them to the lake. Later, 72 fish are caught, and it is found that 36 of them are tagged. Estimate the number of fish in the lake.
A. 130
B. 673,920
C. 520
D. 10
Answer: C
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Expand, where i2 = -1.(-1 + i
)3
A. 8 B. 4 + 4i C. 1 D. -1 - 3i
Find the derivative of the function.r = 
(5 - ?)
A. 
= 
+ 5
B. 
= - 
- 1
C. 
= 
+ 1
D. 
= ?2 - 1
Provide an appropriate response. Find sin 43.6° to the nearest ten-thousandth.
A. 0.6896 B. -0.3731 C. 0.9523 D. 0.7242
Solve the problem using the tables below.
Jack started a whole-life insurance policy for $70,000 when he was 23 years old. At age 50, the policy has a cash value of $5010 and he converts the policy to extended term insurance for the same face value. Use 20-year level term rates to estimate the number of years of extended term insurance he has using a non-tobacco rate. Round to the nearest hundredth when necessary.
A. 16.27 years B. 27.63 years C. 11.95 years D. 20.75 years