Suppose you have the following project digraph. (The numbers in parentheses represent hours.)
Consider the following timeline using three processors.
A. This timeline is not an optimal schedule because the project can be scheduled with a finishing time of 12 hours.
B. This timeline is an optimal schedule for three processors.
C. This timeline is an illegal schedule because task E was started before task C was completed.
D. This timeline is not optimal because task F was started after processor 3 was idle for 2 hours.
E. none of these
Answer: B
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Decide whether or not the given equation is an identity.2 cos2 
csc x = csc x + tan x
A. Yes B. No
Use symbols to name the figure. If more than one symbol is possible, give all possible names.
BC
A. 
or 
B. 
C. 
D. 
or 
Find the intercepts of the function f(x).f(x) = (x - 3)2(x2 - 25)
A. x-intercepts: -3, -25; y-intercept: 75 B. x-intercepts: -5, 3, 5; y-intercept: 225 C. x-intercepts: -5, 3, 5; y-intercept: -225 D. x-intercepts: 3, 25; y-intercept: 75
Write the radical as a rational expression. Assume that variables are nonnegative real numbers.
A. n2
B. 
C. 
D. n1/2