Determine where the function is increasing and where it is decreasing.f(x) = x2 + 8x + 7
A. increasing on (-9, ?)
decreasing on (-?, -9)
B. increasing on (-4, ?)
decreasing on (-?, -4)
C. increasing on (-?, -4)
decreasing on (-4, ?)
D. increasing on (-?, -9)
decreasing on (-9, ?)
Answer: B
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Sketch the surface z = f(x,y).f(x, y) = 1 - x - 2y
A. 
B. 
C. 
D. 
Provide an appropriate response.Add: 
+ 
A. 
B. 
C. 
D. 
E. none of the above
Express as a single logarithm and, if possible, simplify.log a 
- log a 
A. log a 
B. log a 
C. log a 
D. log a 
Solve the problem by writing and solving a suitable system of equations.Suppose that you are to cut a piece of ribbon for a wreath that is 88 inches long into two pieces so that one piece is 3 times as long as the other. How long is each piece of ribbon?
A. 22 and 88 inches B. 22 and 66 inches C. 29 and 44 inches D. 29 and 88 inches