Find the real solutions of the equation.
= -1
A. {2}
B. {-1}
C. {1}
D. {-2}
Answer: D
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Find all the second order partial derivatives of the given function.f(x, y) = ex/y
A. 
= 
; 
= ex/y
; 
= 
= -ex/y
B. 
= 
; 
= -ex/y
; 
= 
= ex/y
C. 
= 
; 
= 
; 
= 
= 
D. 
= 
; 
= ex/y
; 
= 
= -ex/y
Multiply. Write the answer in simplest form.- 
? 200y3
A. 
B. -150y3
C. 120y3
D. 
Provide an appropriate response.Missouri charges a 6% sales tax, and Springfield, MO, charges an additional .655% city sales tax. What would be the tax on a purchase of seven cans of ground-marking spray paint that cost $2.75 each?
Fill in the blank(s) with the appropriate word(s).
The number line in the following graphic represents fictional net exports in billions of dollars for five countries. Net exports are obtained by subtracting total imports from total exports; a negative net export means the country imported more goods than it exported.
What is the sum of net exports for China and The United States ?
A. 0 billion dollars B. 30 billion dollars C. 10 billion dollars D. 230 billion dollars