Find the derivative of f at the given point.f(x) = x2 + 3x + 16 at x = 7
A. 14
B. 5
C. 3
D. 17
Answer: D
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Decide whether the equation is "conditional," an "identity," or a "contradiction." Give its solution set.2[3 - (5 - 5r)] - r = -10 + 3(2 + 3r)
A. Identity; {all real numbers} B. Conditional; {10} C. Conditional; {-5} D. Contradiction; ?
Find the domain of the function. Put your answer in set-builder notation.f(x) = 
A. 
B. 
C. 
D. 
Solve the problem.The position of a weight attached to a spring is s(t) = -3 cos 7t inches after t seconds. What are the frequency and period of the system?
A. Frequency = 
cycles per sec, period = 
sec
B. Frequency = 
cycles per sec, period = 
sec
C. Frequency = 
cycles per sec, period = 
sec
D. Frequency = 7 cycles per sec, period = 
sec
Graph the solution of the system.2x + y ? 4 x - 1 ? 0
A. 
B. 
C. 
D. 