Use a number line to find the difference.-1 - (-2)
A. -3
B. 2
C. 1
D. -1
Answer: C
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Find all values for which at least one denominator is equal to 0. Write answers using the symbol ?. Do not solve.
= 
A. x ? -9, 
B. x ? 0, -9, 
, - 
, 
C. x ? -9, 
, - 
, 
D. x ? - 
, 
Solve the logarithmic equation. Be sure to reject any value that is not in the domain of the original logarithmic expressions. Give the exact answer.ln 7 + ln (x - 1) = 0
A. {1}
B. {
}
C. {
}
D. {
}
Solve the problem.In a school survey, students showed these preferences for instructional materials. Answer the question. 
About how many students would you expect to prefer TV in a school of 650 students?
A. About 12 students B. About 78 students C. About 117 students D. About 130 students
Round the money amount to the nearest cent or dollar as indicated.$3.487, nearest cent
A. $3.5 B. $3.49 C. $3 D. $3.48