Find the circle's circumference or area, as requested. Use 3.14 as the approximate value of ?, and round your answer to the nearest tenth.Find the area.
A. 295.2 in.2
B. 147.6 in.2
C. 6936.3 in.2
D. 1734.1 in.2
Answer: D
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Perform the indicated operation. Write the answer in the form a + bi.
(cos 16° + i sin 16°) ? 
(cos 14° + i sin 14°)
A. 
+ 
i
B. 
- 
i
C. 
+ 
i
D. 
+ 
i
Let f(x, y) = x + 3xy - 7x - 8. Find f(2h, 3k).
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Write the expression in the standard form a + bi.If z = 2 - 5i, evaluate z
.
A. 4 - 25i B. -21 C. 29 D. 4 - 25i2
Solve the problem.The quadratic function 
models the median, or average, age, y, at which U.S. men were first married x years after 1900. In which year was this average age at a minimum? (Round to the nearest year.) What was the average age at first marriage for that year? (Round to the nearest tenth.)
A. 1953, 36 years old B. 1962, 21.8 years old C. 1962, 50.9 years old D. 1936, 50.9 years old