Find the exact value of the expression.
A. - 
B. -2
C. - 
D. -
Answer: D
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Sketch the surface z = f(x,y).f(x, y) = 3 - x2
A. 
B. 
C. 
D. 
Find the probability.If you are dealt two cards successively (with replacement of the first) from a standard 52-card deck, find the probability of getting a face card on the first card and an ace on the second.
A. 
B. 
C. 
D. 
Indicate whether the statement is true always, sometimes, or never.When i is raised to an odd power, the result is -1.
A. Always B. Sometimes C. Never
Write a system of equations and use the inverse of the coefficient matrix to solve the system.A bakery sells three types of cakes, each requiring the amount of ingredients shown.
To fill its orders for these cakes, the bakery used 72 cups of flour, 48 cups of sugar, and 53 eggs. How many cakes of each type were made?
A. 17 cake I 8 cake II 5 cake III B. 5 cake I 8 cake II 15 cake III C. 39 cake I 8 cake II 12 cake III D. 15 cake I 8 cake II 5 cake III