Find the vertex of the parabola associated with the quadratic equation.y = x2 + 2x + 8
A. (1, 8)
B. (1, 7)
C. (-1, 8)
D. (-1, 7)
Answer: D
Mathematics
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Solve. Round to the nearest percent if necessary.A company increased the number of its employees from 70 to 133. What was the percent of increase?
A. 47% B. 190% C. 90% D. 63%
Mathematics
Match the graph to one of the listed functions. 
A. f(x) = -x2 - 4 B. f(x) = -x2 - 4x C. f(x) = x2 - 4 D. f(x) = x2 - 4x
Mathematics
Graph the linear function.f(x) = 
x - 6
A. 
B. 
C. 
D. 
Mathematics
The graphing calculator screens show a system and the point of intersection. Choose the screen which best represents the given system.y = -x + 5y = x
A. 
B. 
C. 
D. 
Mathematics