For each graph of a quadratic function 
a) Tell whether a is positive or negative,b) Determine the vertex,c) Determine the axis of symmetry, andd) Determine the range.
A. Negative; (2, 6); x= 2; [6, ?)
B. Positive; (2, 6); y= 6; (6, ?)
C. Positive; (6, 2); x= 6; [2, ?)
D. Positive; (2, 6); x= 2; [6, ?)
Answer: D
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Solve the differential equation.y' e3x + 3ye3x = 4x
A. y = 4x2e-3x + Ce-3x B. y = 2x2e-3x + Ce-3x C. y = 4x2e3x + Ce3x D. y = 2x2e3x + Ce3x
Middletown is designing a new high-speed rail system to connect Downtown, the Airport, and the Mall. The elevated tracks for the rail system will run along the existing roads, that run on a grid as shown below. In addition, a central switching station must be located at one of the intersections.
What is the length of the optimal network?
A. 7 blocks
B. 8 blocks
C. 5 + 
blocks
D. 9 blocks
E. none of these
Provide an appropriate response.The only consecutive whole numbers that are both prime numbers are 
and 
.
A. 2 and 3 B. 1 and 2 C. 0 and 1 D. 6 and 7
Find the square root. When necessary, round to nearest thousandth.
A. 5.359 B. 4.359 C. 4.358 D. 4.369