Write the first n terms of the given arithmetic sequence (the value of n is indicated in the question).a3 = 7, d = -3, n = 5
A. 16, 13, 10, 7, 4
B. 13, 10, 6, 4, 1
C. 10, 7, 4, 1, -2
D. 13, 10, 7, 4, 1
Answer: D
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An inlet pipe on a swimming pool can be used to fill the pool in 45 hours. The drain pipe can be used to empty the pool in 50 hours. If the pool is half filled and then the drain pipe is accidentally opened, how long will it take to fill the pool? ?
A. 209 hours B. 225 hours C. 237 hours D. 450 hours E. 5 hours
Determine whether the given function is one-to-one. If it is one-to-one, find its inverse.f(x) = 2x2 - 5, x ? 0
A. Not one-to-one
B. f-1(x) = 
C. f-1(x) = 
D. f-1(x) = 
In 
, radii 
and 
are congruent to chord
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.
What will be an ideal response?
Use the Concavity Theorem to determine where the given function is concave up and where it is concave down. Also find all inflection points.G(w) = 4w2 + 16w + 15
A. Concave up for all w; no inflection points B. Concave up on (-?, -2), concave down on (-2, ?); inflection point (-2, -1) C. Concave up on (-2, ?), concave down on (-?, -2); inflection point (-2, -1) D. Concave down for all w; no inflection points