Change the logarithmic expression to an equivalent expression involving an exponent.ln 
= -5
A. -5e = 
B. 
-5 = e
C. 
e = -5
D. e-5 = 
Answer: D
Mathematics
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Solve the problem.A 20-kg mass is attached to a spring that hangs vertically and is stretched 3 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. 16.3333 J B. 424.6667 J C. 228.6667 J D. 212.3333 J
Mathematics
Round to the indicated place value.Round to the nearest ten: 86.1
A. 89 B. 91 C. 90
Mathematics
Use implicit differentiation to find the specified derivative at the given point.Find 
at the point (1, 0) for cos xy + yex = 0.
A. 
B. e
C. 1
D. 0
Mathematics
Identify the equation as either an identity or not.cos x csc x tan x = 1
A. Identity B. Not an identity
Mathematics