Find 
by direct substitution.
A. -30
B. 48
C. 12
D. -34
E. limit does not exist
Answer: C
Mathematics
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Solve the problem.Mara can type 31 words per minute. How many words would she type in 
hour (40 minutes)?
A. 1240 words B. 827 words C. 47 words D. 21 words
Mathematics
Perform the indicated operation and write your answer with positive integer exponents.
? 
A. 
B. 1
C. 
D. -1
Mathematics
Find the domain of the composite function f?g. Write the domain in interval notation.f(x) = 8x + 56, g(x) = x + 6
A. (-?, 13) ? (13, ?) B. (-?, -7) ? (-7, -6) (-6, ?) C. (-?, -13) ? (-13, ?) D. (-?, ?)
Mathematics
Factor completely. If the polynomial cannot be factored, write "prime."x4 - 81
A. (x + 3)2(x - 3)2 B. (x2 + 9)(x2 - 9) C. (x2 - 9)(x - 3)(x + 3) D. (x2 + 9)(x - 3)(x + 3)
Mathematics