Factor by substitution.21( 3p - 6)2 - 10( 3p - 6) + 1
A. ( 21p + 43)( 9p - 18)
B. ( 21p - 55)( 8p - 19)
C. ( 21p - 43)( 9p - 19)
D. ( 20p - 43)( 2p - 19)
Answer: C
Mathematics
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Solve the problem.Doris has a fish pond 15 ft by 18 ft. She wants to put grass in a strip of uniform width around the pond. She has enough grass seed for 234 ft2. How wide will the strip be?
A. 1.5 ft B. 9 ft C. 3 ft D. 12 ft
Mathematics
Use the product rule to multiply. Assume all variables represent positive real numbers.
? 
A. 4
B. 2
C. 8
D. 2
Mathematics
Evaluate the expression log 9 (log 2 8).
A. 
B. 
C. 
D. 
E. 
Mathematics
Use matrices to solve the system of equations (if possible). Use Gaussian elimination with back-substitution or Gauss-Jordan elimination.
?
?
A. ?(-2, -1, 8, 6) B. (-2, 0, 8, 6) C. (-2, 0, 8, -6) D. ?(-2, -1, -8, -6) E. (-2, 0, -8, 6)
Mathematics