Solve the problem.The following table shows the pricing schedule for a phone company's long-distance rates.
Below is a portion of Andrea's long-distance call summary. Find the mean and median duration of the calls. 
A. mean: 38 min.; median: 29 min.
B. mean: 38 min.; median: 47 min.
C. mean: 43.5 min.; median: 38 min.
D. mean: 38 min.; median: 43.5 min.
Answer: D
Mathematics
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Determine whether the vectors and
are equivalent.A(5, 4), B(11, 11), C(5, 7), and D(11, 14)
A. Not equivalent B. Equivalent
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Factor the trinomial completely. If the polynomial cannot be factored, write "prime."10x2 - 75x + 5x3
A. (5x2 + 15x)(x - 5) B. (x - 3)(5x2 + 25) C. 5x(x - 3)(x + 5) D. 5x(x + 3)(x - 5)
Mathematics
Find the product and write the answer in simplest form. Assume variables represent nonnegative values. ?
A.
B.
C.
D.
Mathematics
Simplify the expression. Use positive exponents. Assume variables represent nonzero real numbers.
A. 8x2 B. 6x2 C. 4x2 D. 4x-2
Mathematics