Find the indicated sum. Use the formula for the sum of the first n terms of a geometric sequence.
A. 8
B. 40
C. -340
D. -88
Answer: D
Mathematics
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Multiply.(7 - 5i)(7 + 9i)
A. 94 - 28i B. -45i2 + 28i + 49 C. 4 - 98i D. 94 + 28i
Mathematics
Find a polynomial function f(x) of least possible degree having the graph shown.
A. f(x) = 
(x + 2)(x - 3)
B. f(x) = 
(x + 2)(x - 3)2
C. f(x) = 
(x - 2)(x + 3)
D. f(x) = 
(x - 2)(x + 3)2
Mathematics
Find the value of the indicated trigonometric function of the angle ? in the figure. Rationalize the denominator where necessary.
Find tan ?.
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.The temperature recorded on a thermometer was 7°C. Find the corresponding temperature in degrees Fahrenheit. Use the formula 
A. -28.1°F B. -19.4°F C. 35.9°F D. 44.6°F
Mathematics