Solve.
x2 - 
x = -1
A. - 
B. 
, 
C. 
D. 
, - 
Answer: C
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Find the angle 
by using either the table or a calculator. Round your answer to four decimal places.
?
A. 
B. 
C. 
D. 
E. 
Use the RSTC Approach to solve the application.By switching service providers, a family's telephone bill decreased from about $50 a month to about $44. What was the percent of decrease?
A. 13% B. 13.6% C. 12% D. 6%
Solve the problem.The revenue achieved by selling x graphing calculators is figured to be 
The cost of each calculator is 
How many graphing calculators must be sold to make a profit (revenue - cost) of at least $695.80?
A. {x?49 < x < 71} B. {x?51 < x < 69} C. {x?50 < x < 48} D. {x?19 < x < 41}
Graph and write interval notation for the compound inequality.3 ? x ? 7
A. [3, 7)
B. (3, 7)
C. (3, 7]
D. [3, 7]