Solve the problem.Find all points having a y-coordinate of 7 whose distance from the point (3, 4) is 
.
A. (6, 7) and (5, 7)
B. (1, 7) and (13, 7)
C. (-6, 7) and (5, 7)
D. (1, 7) and (5, 7)
Answer: D
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Suppose you have the following project digraph. (The numbers in parentheses represent hours.)
If we use the priority list F, E, A, D, B, G, C and the priority-list model to schedule this project with two processors, the project timeline is
A. 
B. 
C. 
D. 
E. none of these
Use a graphing calculator and the method of matrix inverses to solve the system. Give five decimal places, if necessary.?x + ey + 
z = 2ex + ?y + 
z = 4
x + ey + ?z = 6
A. {(-4.12755, 4.84931, -0.01039)} B. {(-2.71828, 3.14159, 1.41421)} C. {(-2.01284, 2.71182, 0.67317)} D. {(1.41421, 2.82843, 3.46410)}
Write the expression as a single logarithm with coefficient 1. Assume all variables represent positive real numbers with 
and 
.2 log6 (3x - 3) + 6 log6 (2x + 1)
A. log6 ((3x - 3)2 + (2x + 1)6)
B. log6 
C. log6 (3x - 3)2(2x + 1)6
D. 12 log6 (3x - 3)(2x + 1)
Find the product, if possible. 
A. 
B. 
C. 
D. 