Solve the problem.A weight attached to a spring is pulled down 3 inches below the equilibrium position. Assuming that the period of the system is 
second, determine a trigonometric model that gives the position of the weight at time t seconds.
A. s(t) = 3cos 
t
B. s(t) = 3cos 10?t
C. s(t) = -3cos 10?t
D. s(t) = -3cos 5?t
Answer: C
Mathematics
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Decompose v into two vectors v1 and v2, where v1 is parallel to w and v2 is orthogonal to w.v = 2i + 3j,
w = -2i + j
A. v1 = + 
i - 
j, v2 = 
i + 
j
B. v1 = + 
i - 
j, v2 = 
i + 
j
C. v1 = + 
i - 
j, v2 = 
i + 
j
D. v1 = + 
i - 
j, v2 = - 
i + 
j
Mathematics
Use substitution to determine whether the system of linear equations has no solutions, one solution, or infinitely many solutions.2x + 3y = 64x + 6y = 12
A. One B. No solutions C. Infinitely many
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Solve the equation for exact solutions.4 cos-1 x = ?
A. 
B. 
C. 
D. 
Mathematics
Add or subtract as indicated.
+ 
A. 
B. 
C. 
D. 
Mathematics