Find the inverse of the function.f(x) = 
A. f-1(x) = 
B. f-1(x) = 
C. f-1(x) = 
D. Not invertible
Answer: B
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Use your calculator to solve the problem.The impedance (in ohms) of a series RLC circuit is given by the expression 
, where R is the resistance of the resistor, XL is the reactance of the coil, and XC is the reactance of the capacitor. What is the impedance of a circuit containing a 340 ohm resistor, a coil with a reactance of 2422 ohms, and a capacitor with a reactance of 896 ohms? (All values are approximate.)
A. 830 ohms B. 6.0 × 1012 ohms C. 2,400,000 ohms D. 1600 ohms
Solve the problem.Mara can type 1120 words in 
hour (40 minutes). How many words per minute can she type?
A. 28 words/minute B. 19 words/minute C. 42 words/minute D. 747 words/minute
Multiply.
? 
A. 
B. 
C. 
D. 
Graph the polynomial function. Factor first if the expression is not in factored form.f(x) = x(x + 1)(x - 2)3
A. 
B. 
C. 
D. 