Solve the equation on the interval 0 ? ? < 2?.tan(2?) - tan ? = 0
A. {0}
B. {0, ?}
C. 
D. 
Answer: B
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The figure shows the velocity v or position s of a body moving along a coordinate line as a function of time t . Use the figure to answer the question. v (ft/sec)
What is the body's speed when t = 2 sec?
A. 2 ft/sec B. 3 ft/sec C. 0 ft/sec D. -2 ft/sec
Provide an appropriate response.If the radius of a circle is doubled, how is the length of the arc intercepted by a fixed central angle changed?
What will be an ideal response?
Find the value of x that satisfies the equation.x - 
= - 
A. x = - 
B. x = 
C. x = 
D. x = - 
Solve the problem.The concentration of alcohol in a person's blood is measurable. Suppose that the risk R (given as a percent) of having an accident while driving a car can be modeled by the equation R = 5ekxwhere x is the variable concentration of alcohol in the blood and k is a constant.Suppose that a concentration of alcohol in the blood of 0.07 results in a 10% risk 
of an accident. Find the constant k in the equation.Using this value of k, what is the risk if the concentration is 0.11?
What will be an ideal response?