Tell whether a linear model or a quadratic model is appropriate for the data. If a quadratic model is appropriate, then decide also whether the lead coefficient should be positive or negative.
A. Quadratic; leading coefficient negative
B. Linear
C. Quadratic; leading coefficient positive
Answer: C
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Provide an appropriate response.Find any local extrema (maxima, minima, or saddle points) of 
given that 
and 
A. Local minimum at 
B. Saddle point at 
C. Saddle point at 
D. Local maximum at 
Solve the equation.
- 2 = 
+ 3
A. x = 15
B. x = 5
C. x = 3
D. x = 
Solve the problem.The northern third of Indiana is a rectangle measuring 96 miles by 132 miles. Thus, let 
Assuming that the total annual snowfall (in inches), S(x,y), at 
is given by the function S(x,y) = 60e-0.001(2x + y) with (x,y) ? D, find the average snowfall on D.
A. 52.06 inches B. 51.14 inches C. 52.44 inches D. 51.78 inches
Determine if the sequence is arithmetic. If the sequence is arithmetic, find the common difference.an = n(n - 6)
A. no B. yes, 1 C. yes, -6 D. yes, 6