Find the domain of the function.f(x) = 
- 3
A. 
, or 
B. {x|x ? 0}, or (-?, 0) ? (0, ?)
C. 
, or 
D. all real numbers, or (-?, ?)
Answer: C
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Convert as indicated. When necessary, round to the nearest tenth of a degree.At a particular business it is required that the temperature be kept at 72° F, but the thermostat is calibrated in degrees Celsius. Find the temperature to be set.
A. 161.6° C B. 23.2° C C. 136° C D. 22.2° C
Express the product as a sum containing only sines or cosines.sin(3?) sin(7?)
A. 
[- cos(4?) - cos(10?)]
B. 
[cos(4?) - cos(10?)]
C. sin2(21?2)
D. 
[cos(10?) - sin(4?)]
Find the vertex of the parabola.f(x) = 4x2 - 48x + 153
A. (6, 0) B. (9, 0) C. (6, 9) D. (9, 6)
Solve the problem.Use determinants to write an equation in slope-intercept form of the line that passes through the points 
A. y = -3x - 1 B. y = 3x + 1 C. y = 3x - 1 D. y = -3x + 1