Solve the equation in the interval [0, 2?). Express solutions as approximations to the nearest hundredth.8 sec2x - 6 sec x - 7 = 0
A. {0.76, 2.38}
B. ?
C. {2.38, 3.90}
D. {0.76, 5.52}
Answer: D
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Divide and write in standard form.
A. 
- 
i
B. 
- 
i
C. - 
- 
i
D. - 
- 
i
Transform the polar equation to an equation in rectangular coordinates. Then identify and graph the equation.r = 4 cos ?
A. 
(x - 2)2 + y2 = 4; circle, radius 2,
center at (2, 0) in rectangular coordinates
B. 
x2 + (y + 2)2 = 4; circle, radius 2,
center at (0, -2) in rectangular coordinates
C. 
x2 + (y - 2)2 = 4; circle, radius 2,
center at (0, 2) in rectangular coordinates
D. 
(x + 2)2 + y2 = 4; circle, radius 2,
center at (-2, 0) in rectangular coordinates
Write the logarithmic equation as an exponential equation.log 100 = 2
A. 102 = 100
B. 2010 = 100
C. 1001/3 = 10
D. 1001/2 = 
Perform the indicated operations and simplify the result. Leave the answer in factored form.
+ 
A. 
B. 
C. 
D. 