Find the inverse of the function.f(x) = -x2 + 5, x ? 0
A. f-1(x) = 
B. f-1(x) = x2 + 5
C. f-1(x) = - 
D. f-1(x) = 
Answer: D
Mathematics
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Express the given complex number in polar form.2.41e0.008jr
A. 2.41 ( cos 138.1° + j sin 138.1°) B. 0.008 ( cos 138.1° + j sin 138.1°) C. 2.41 ( cos 0.5° + j sin 0.5°) D. 0.008 ( cos 0.5° + j sin 0.5°)
Mathematics
Simplify. Write the answer using only positive exponents. Leave the answer in exponential notation.(x3y)3
A. x9y3 B. x6y3 C. x3y3 D. xy9
Mathematics
Solve. Express your answer as a signed number.The population of a certain city decreased by 24,883 in 10 years. Find the average annual change in population.
A. -248.83 per year B. 248.83 per year C. -2488.3 per year D. 2488.3 per year
Mathematics
Solve the equation.
log (x + 8) -1 = 0
A. -5 B. 992 C. 9992 D. 1008
Mathematics