Find v ? u.v = 
and u = 
A. 
B. 
i - 
j
C. 
i - 
j
D. 0
Answer: D
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Complete the square for the binomial. Then factor the resulting perfect square trinomial.x2 + 7x
A. x2 + 7x + 14 = (x + 7)2
B. x2 + 7x + 
= 
2
C. x2 + 7x - 
= 
2
D. x2 + 7x + 
= 
2
Perform the indicated operation. Express the answer in scientific notation.
A. 2.0 × 103 B. -1.5 C. 2.5 × 104 D. 5.0 × 10-9
Subtract the fractions. Write the answer in lowest terms.
- 
A. 
B. 
C. 
D. 
Set up an equation that can be used to solve the problem. Solve the equation and answer the question asked. A train ticket in a certain city is 
. People who use the train also have the option of purchasing a frequent rider pass for 
each month. With the pass, each ticket costs only
. Determine the number of times in a month the train must be used so that the total monthly cost without the pass is the same as the total monthly cost with the pass.
A. 27 times B. 24 times C. 25 times D. 26 times