Evaluate the function.f(x, y) = 
+ xy; find f(-8, -8).
A. 65
B. 1
C. 128
D. 63
Answer: A
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Beginning in 2001 the price, in dollars per ounce, of gold was modeled approximately by
,
where t is the time in years since the beginning of 2001.A: Make a graph of G versus t that shows estimated gold prices for 2001 to 2010.B: A broker recommended purchase of gold as long as the price was between $400 and $700 per ounce. Add the horizontal lines 
and 
to your graph.C: During what time period was the purchase of gold advised? Give your answer in terms of t correct to two decimal places.
What will be an ideal response?
A project consists of seven independent tasks with processing times (in hours) given by 4, 5, 6, 7, 8, 9, and 12.Find the optimal finishing time Opt for N = 2 processors.
A. Opt = 27 hours B. Opt = 24 hours C. Opt = 25 hours D. Opt = 23 hours E. Opt = 26 hours
Solve the problem.Find the value for x in the rectangular prism. Use exact values. 
7 in.
A. 3
in.
B. 
in.
C. 2
in.
D. 310 in.
Factor the expression completely, if possible.121 - y2
A. (11 + y)2 B. (11 + y)(11 - y) C. (11 - y)2 D. Does not factor