Decide whether or not the functions are inverses of each other.f(x) = 9x2 + 2, g(x) = 
A. Yes; No values need to be excluded.
B. No
C. Yes; Exclude the interval (-?, 2)
D. Yes; Exclude the interval (-?, 9)
Answer: C
Mathematics
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Sketch by hand the graph of the function. Give the coordinates for the vertex.y = x2 + 5x + 6 
A. vertex: 
B. vertex: 
C. vertex: 
D. vertex: 
Mathematics
Graph the solution set of the system of inequalities or indicate that the system has no solution.x2 + y2 ? 81y - x2 > 0
A. 
B. 
C. 
D. 
Mathematics
Find the zero of the linear function.h(x) = -3x + 4
A. 
B. 1
C. - 
D. -1
Mathematics
Evaluate the algebraic expression under the given conditions.a3 + 4a - 18 for a = 5
A. 127 B. 55 C. 87 D. 627
Mathematics