Use Descartes' rule of signs to help list the possibilities for the nature of the solutions for the equation. Do not solve the equation.5x3 - 8x2 + 40x + 39 = 0
A. 1 positive and 2 nonreal complex solutions or 1 positive and 2 nonreal complex solutions
B. 1 negative and 2 positive solutions or 1 negative and 2 nonreal complex solutions
C. 1 positive and 2 negative solutions or 1 negative and 2 nonreal complex solutions
D. 1 positive and 2 negative solutions
E. 1 positive and 2 negative solutions or 1 positive and 2 nonreal complex solutions
Answer: B
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Find the domain and range of the inverse of the given function.f(x) = 
A. Domain and range: all real numbers B. Domain: all real numbers; range: [0, ?) C. Domain: [4.9, ?); range: [0, ?) D. Domain: all real numbers; range: [4.9, ?)
Subtract.
A. 7437 B. 4355 C. 4437 D. 4435
Provide an appropriate response.Starting at the right side of a number, commas are used to separate the number into groups of three digits.
A. True B. False
Simplify the expression. Assume that all variables are positive when they appear.
A. -2x6y6 B. 2x4y4 C. -2x4y4 D. 4x4y4