Find the coordinates of the vertex.
f(x) = x² – 4x + 5
A) (2, 1) B) (–2, 1) C) (–1, 2) D) (–1, –2)
A) (2, 1)
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The position vector of a particle is r(t). Find the requested vector.The velocity at t = 0 for r(t) = cos (3t)i + 2 ln (t - 4)j - 
k
A. v(0) = -
j
B. v(0) = 3i - 
j
C. v(0) = 
j
D. v(0) = -3i - 
j
Solve the problem.One pump can drain a pool in 6 minutes. When a second pump is also used, the pool only takes 4 minutes to drain. How long would it take the second pump to drain the pool if it were the only pump in use?
A. 2
min
B. 
min
C. 12 min
D. 22 min
Decide whether or not the set of ordered pairs defines a function.{(2, 4), (2, 7), (4, 4), (8, -3), (10, 5)}
A. No B. Yes
Provide an appropriate response.Are parentheses as important when adding rational expressions as they are when subtracting rational expressions? Why or why not?
What will be an ideal response?