Use the laws of exponents to simplify each expression using positive exponents only. Assume all variables represent nonzero real numbers.(12b)0
A. 1
B. b
C. 0
D. 12
Answer: A
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Find the magnitude of u × v and the unit vector parallel to u × v in the direction of u × v.u = -5i + 4j + 2k, v = 10i - 8j - 4k
A. 0; no direction
B. 15; 
(5i - 4j - 2k)
C. 0; 5i- 4j - 2k
D. 3
; 
(5i - 4j - 2k)
The graph below is one complete cycle of the graph of an equation containing a trigonometric function. Find an equation to match the graph. If you are using a graphing calculator, graph your equation to verify that it is correct.
?
?
A. 
B. ?
C. ?
D. ?
E. ?
The graph of a one-to-one function f is given. Sketch the graph of the inverse function f-1, on the same set of axes. Use a dashed line for the inverse.
A. 
B. 
C. 
D. 
Evaluate the expression. Round your result to two decimal places.
?
?
A. 4.21 B. 2.21 C. 3.21 D. 0.21 E. 1.21