Solve the equation. First simplify the expression by combining like terms.-6a + 2 + 7a = 5 - 21
A. { 28 }
B. { -28 }
C. { -18 }
D. { 18 }
Answer: C
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Find all the second order partial derivatives of the given function.f(x, y) = x ln (y - x)
A. 
= 
; 
= - 
; 
= 
= 
B. 
= 
; 
= 
; 
= 
= 
C. 
= 
; 
= - 
; 
= 
= - 
D. 
= 
; 
= - 
; 
= 
= 
Use a graphing calculator to find the coordinates of the turning points of the graph of the polynomial function in the indicated domain interval. Give answers to the nearest hundredth.f(x) = -x3 - 8x2 + 21x + 108; [1, 2]
A. (-6.42, -621.94) B. (0, -12) C. (-3.50, -106.37) D. (1.09, 120.09)
The graph of a logarithmic function is shown. Select the function which matches the graph.
A. y = log(x - 1) B. y = 1 - log x C. y = log(1 - x) D. y = log x - 1
Write the number in scientific notation.744,495
A. 7.44495 × 10-5 B. 7.44495 × 106 C. 7.44495 × 105 D. 7.44495 × 101