Solve the problem. Approximate to the nearest tenth when necessary.The area of a circle is 47? square inches. Find the radius of the circle.
A. 47 in.
B. 12.2 in.
C. 6.9 in.
D. 3.9 in.
Answer: C
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The magnitude of a star is a measure of its brightness, and it is related to the relative intensity of light reaching Earth from the star. The relationship is
Magnitude 
(Relative intensity).
If relative intensity is multiplied by 123.03. how is magnitude affected? Round your answer to two decimal places if necessary.
?
A. Magnitude is decreased by 2.09. B. Magnitude is increased by 5.23. C. Magnitude is increased by 2.09. D. Magnitude is decreased by 5.23.
Integrate the function.
dx
A. x + ln 
+ C
B. x - ln 
+ C
C. x - ln 
+ C
D. x + ln 
+ C
Find all cube roots of the complex number. Leave answers in trigonometric form.3 + 3i
A. 
cis 20°, 
cis 140°, 
cis 260°
B. 
cis 20°, 
cis 140°, 
cis 260°
C. 
cis 30°, 
cis 150°, 
cis 270°
D. 
cis 20°, 
cis 140°, 
cis 260°
Use the formula for the general term (the nth term) of an arithmetic sequence to find the indicated term of the sequence with the given first term, a1, and common difference, d.Find a14 when a1 = 23, d = -3.
A. -16 B. -19 C. 62 D. -39