Factor the trinomial completely.x4 - 9x3 + 14x2
A. (x2 - 2)(x2 - 7)
B. x2(x - 14)(x - 1)
C. x2(x + 2)(x + 7)
D. x2(x - 2)(x - 7)
Answer: D
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Solve.ln 8x = 5
A. 1.868 B. 1187.305 C. 18.552 D. 148.413
Add or subtract. Assume all variables represent nonnegative real numbers.6
- 5x
A. x
B. 2x
C. 6
- 2x
D. Cannot simplify
Solve the problem.On a buying trip in Los Angeles, Rosaria Perez ordered 120 pieces of jewelry: a number of bracelets at $10 each and a number of necklaces at $13 each. She wrote a check for $1320 to pay for the order. How many bracelets and how many necklaces did Rosaria purchase?
A. 75 bracelets and 45 necklaces B. 90 bracelets and 30 necklaces C. 85 bracelets and 35 necklaces D. 80 bracelets and 40 necklaces
Solve, using the substitution method, and check.
A. (12, -13) B. (7, -8) C. (6, -9) D. (7, 8) E. (4, -11)