Find the requested vector.v = 2i - 2j + k, w = 3i - 5j - kFind a vector orthogonal to both v and w.
A. 7i + 5j - 4k
B. -28i - 10j - 34k
C. -13i - 15j - 16k
D. -7i - 5j + 5k
Answer: A
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Solve the problem.An auto mechanic finds that the interval time I, in minutes, between scheduled appointments must be related to the total number of minutes T that he is open each day and the number of scheduled oil changes N according to the formula 
If he wants to be open 9 hours each day, and feels that he can do each oil change in 20 minutes, how many appointments should he make in one day?
A. 2 B. 29 C. 145 D. 0
Determine the domain and the range of the function.f(x) = x2 + 10x
A. domain: all real numbers range: {y|y ? 25} B. domain: {x|x ? 5} range: {y|y ? 25} C. domain: {x|x ? -5} range: {y|y ? -25} D. domain: all real numbers range: {y|y ? -25}
Simplify the expression by using the order of operations.6 ? (3 - 2) + 
A. 37 B. 48 C. 13 D. 23
Simplify.-(-6x)
A. -6x
B. 0
C. 6x
D. 
x