For the pair of functions, find the indicated domain.f(x) = 
, g(x) = x + 5Find the domain of g ? f.
A. (-?, -12) ? (-12, ?)
B. (-?, ?)
C. (-?, -7) ? (-7, ?)
D. (-?, -7] ? [-7, ?)
Answer: C
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Graph the system of inequalities. Indicate the solution by shading.2x + 3y ? 6 x - y ? 3 x ? 1
A. 
B. 
C. 
D. 
Find the root if it is a real number.
A. 30
B. 
C. 
D. 6
Find approximate solutions of the equation.2x2 + 2.4x + 0.3 = 0
A. -0.14 or -1.06 B. 1.06 or 0.14 C. 1.06 or -1.06 D. -0.14 or 0.14
Find the circumference and the area of the circle. Follow the rules for working with measurements.
A. The circumference is 408 m, the area is 6,640 m 2. B. The circumference is 204 m, the area is 50 m 2. C. The circumference is 204 m, the area is 13,300 m 2. D. The circumference is 102 m, the area is 6,640 m 2. E. The circumference is 204 m, the area is 3,320 m 2.