Solve the problem.A 15-kg mass is attached to a spring that hangs vertically and is stretched 1 m from the equilibrium position of the spring. Assume a linear spring with F(x) = kx. How much work is required to stretch the spring and lower the mass 1 m? Round to four decimal places when appropriate.
A. 220.5 J
B. 36.75 J
C. 183.75 J
D. 367.5 J
Answer: D
Mathematics
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A. -(4x3 + 2) csc (x4 + 2x) cot (x4 + 2x) B. -(4x3 + 2) csc x cot x C. - csc (x4 + 2x) cot (x4 + 2x) D. -(4x3 + 2) cot2(x4 + 2x)
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Convert the rectangular equation to polar form.x2 + y2= 144
A. r = 12 cos ? B. r = 12 C. r = 12 sin ? D. r = 144
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Graph the function.f(x) = 
A. 
B. 
C. 
D. 
Mathematics
Provide an appropriate response.Explain why the sum 
+ 
+ 
can be simplified quickly.
What will be an ideal response?
Mathematics