Multiply and simplify. Assume that all variables represent positive real numbers.(
+ 
)(
- 
)
A. 6z
B. 6 - z
C. 6 - 2
D. 6 - 2
Answer: B
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Solve the problem.In an arithmetic sequence with first term P1 and common difference d, the Nth term is given by
A. P1 + Nd. B. d + NP1. C. d + (N - 1)P1. D. P1 + (N - 1)d. E. none of these
Find the exact value of the expression.
A. 
B. 
C. 
D. 2
Solve the problem.The graph shows the sales of a particular brand of appliance from 1992 to 2010, where 1992 corresponds to 
. Two of the data points in the graph can be represented by the ordered pairs 
and 
Use these ordered pairs to write an equation of a line that models the data. Give the equation in slope-intercept form. 
width="280" /> A. y = 250x + 8750 B. y = 250x + 6000 C. y = 600x + 8750 D. y = 600x + 6000
Write your answer in lowest terms.The Brown family traveled 100 miles on a trip this summer. 30 miles of their trip was by train. What fraction of the trip was by train?
A. 
B. 100
C. 
D. 