Multiply and simplify.
? 
A. 
B. 
C. 
D. 
Answer: D
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Find two paths of approach from which one can conclude that the function has no limit as (x, y) approaches (0, 0).f(x, y) = 
What will be an ideal response?
Find any values of the variable that make the expression undefined.
A. 8, 6 B. -8 C. 8 D. None
Factor completely. If the polynomial cannot be factored, say it is prime.x3 - 9x + 5x2 - 45
A. (x2 - 9)(x + 5) B. (x + 3)(x - 3)(x + 5) C. (x - 3)2(x + 5) D. prime
Solve the problem.If friction is ignored, the time t (in seconds) required for a block to slide down an inclined plane is given by the formula t = 
where a is the length (in feet) of the base and g ? 32 feet per second per second is the acceleration of gravity. How long does it take a block to slide down an inclined plane with base a = 8 when 
If necessary, round the answer to the nearest tenth of a second.
A. 1.1 sec B. 1.2 sec C. 1 sec D. 0.3 sec