Find all numbers not in the domain of the function.f(x) = 
A. 8
B. 0
C. None
D. -8
Answer: D
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Find the unit tangent vector T and the principal unit normal vector N. r(t) = (10t sin t + 10cos t)i + (10t cos t - 10 sin t)j - 10k
A. T = (-cos t)i - (sin t)j; N = (sin t)i + (cos t)j B. T = (cos t)i - (sin t)j; N = (-sin t)i - (cos t)j C. T = (-cos t)i - (sin t)j; N = (sin t)i - (cos t)j D. T = (cos t)i + (sin t)j; N = (-sin t)i + (cos t)j
Solve the problem.Find the area of a rectangle with length 14.4 in. and width 
A. 88.8 in.2 B. 432 in.2 C. 432.0 in.2 D. 89 in.2
Solve.Mike, Joe, and Bill are painting a fence. The painting can be finished if Mike and Joe work together for 4 hours and Bill works alone for 2 hours or if Mike and Joe work together for 2 hours and Bill works alone for 5 hours, or if Mike works alone for 6 hours, Joe works alone for 2 hours, and Bill works alone for 1 hour. How much time does it take for each man working alone to complete the painting?
A. Mike 8 hr, Joe 8 hr, Bill 16 hr B. Mike 16 hr, Joe 8 hr, Bill 8 hr C. Mike 12 hr, Joe 10 hr, Bill 10 hr D. Mike 8 hr, Joe 16 hr, Bill 8 hr
Solve the problem.Sam estimates that if he leaves his car parked outside his office all day on a weekday, the chance that he will get a parking ticket is 23%. If Sam leaves his car parked outside his office all day next Tuesday, what is the chance that he will not get a parking ticket?
A. 77% B. 23% C. 5.29% D. -23%