Determine whether the given function is one-to-one. If it is one-to-one, find a formula for the inverse.f(x) = x 
A. f-1(x) = x3 - 2
B. f-1(x) = x 
C. Not one-to-one
D. f-1(x) = x2 + 2
Answer: C
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Determine whether the sequence is arithmetic.2, -3, -8, -13, -18, ...
A. Arithmetic B. Not arithmetic
Solve the problem.The graph shows the percent of students at a local high school who were enrolled in a foreign language class each school year during the 1980s.
Using an estimate of the percentage to the nearest percent, what is the best estimate for the number of students not taking a language in 1982 if a total of 2590 students were enrolled in the school?
A. 440 students B. 2150 students C. 4662 students D. 390 students
Solve the equation. Use words or set notation to identify equations that have no solution, or equations that are true for all real numbers. 
x - 
x = 4
A. {-32}
B. ?
C. {
x is a real number}
D. {32}
Multiply and simplify.
? 
A. 
B. 
C. 
D. 