Identify a, b, and c from the quadratic equation.
A) a=7, b=-2, c=0
B) a=2, b=-7, c=0
C) a=0, b=7, c=2
D) a=0, b=0, c=7
E) a=2, b=0, c=7
B) a=2, b=-7, c=0
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Find the length of the curve.The curve r = a cos2 
, 0 ? ? ? ?, a > 0
A. 
B. 2?a
C. 
D. 2a
Solve the problem.At a local grocery store the demand for ground beef is approximately 50 pounds per week when the price per pound is $4, but is only 40 pounds per week when the price rises to $5.50 per pound. Assuming a linear relationship between the demand x and the price per pound p, express the price as a function of demand. Use this model to predict the demand if the price rises to $5.80 per pound.
A. p = 0.15x + 11.5; 38 pounds B. p = 11.5x + -0.15; 40 pounds C. p = - 0.15x + 11.5; 38 pounds D. p = - 0.15x - 11.5; 40 pounds
Simplify.
? 
A. 
B. 
C. 
D. 
Use the method of adding y-coordinates to graph the function.f(x) = x + cos (2x)
A. 
B. 
C. 
D. 