Find the derivative of the function by using the definition.y = 5x4 - 9x3 - 8

A. 5x3 - 9x2 
B. 20x3 - 27x2 - 8
C. 5x3 - 9x2 - 8
D. 20x3 - 27x2 


Answer: D

Mathematics

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Write the expression as a sum of two logarithms.log10 xy

A. log10 x - log10 y B. log5 x - log5 y C. log5 x + log5 y D. log10 x + log10 y

Mathematics

Solve f(x) = g(x). Find the points of intersection of the graphs of the two functions.f(x) = x2 + 6x + 23g(x) = 23

A. x = 
B. x = -6, x = 0
C. x = 0, x = 6
D. no real numbers

Mathematics

Convert the function to the specified base. f(x) = log4x; convert to base e

A. f(x) =  ln x
B. f(x) = 4 ln x
C. f(x) = 
D. f(x) = 

Mathematics

Find the intercepts of the absolute value function.f(x) =  - 3

A. (-3, 0), (3, 0), (0, 3) B. (-3, 0), (0, -3) C. (-3, 0), (3, 0), (0, -3) D. (-3, 0), (0, 0), (0, -3)

Mathematics