Write interval notation.{x?-4 ? x < 0}
A. [-4, 0)
B. (-4 ,0]
C. (-4, 0)
D. [-4, 0]
Answer: A
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Use implicit differentiation to find dy/dx.x = sec(6y)
A. 
cos(6y) cot(6y)
B. cos(6y) cot(6y)
C. 6 sec(6y) tan(6y)
D. 
sec(6y) tan(6y)
Write the word phrase as an algebraic expression. Use x to represent the unknown value.Twice the difference of ten and a number
A. 2(10 - x) B. 2(x - 10) C. 2x - 10 D. 10 - 2x
Use the vertex and intercepts to sketch the graph of the quadratic function.f(x) = x2 - 8x + 7
A. 
B. 
C. 
D. 
Solve the problem.A simple exercise machine can be constructed by mounting a stiff spring securely to a wall and attaching a "T" handle to the free end of the spring. The arms can be exercised simply by pulling the "T" handle towards the torso. For a particular spring, the stretch distance is related to the work exerted by the equationx
= 
,where W is the work exerted in joules and x is the stretch distance in cm. How far will you stretch the spring if you exert 640 joules of work? Round your answer to three decimal places.
A. 0.087 cm B. 0.123 cm C. 0.131 cm D. 0.015 cm