Solve the problem.The position (in centimeters) of an object oscillating up and down at the end of a spring is given by 
at time t (in seconds). The value of A is the amplitude of the motion, k is a measure of the stiffness of the spring, and m is the mass of the object. Find the object's acceleration at time t.
A. a = - A sin 
cm/sec2
B. a = 
cos 
cm/sec2
C. a = - A
sin 
cm/sec2
D. a = - 
sin 
cm/sec2
Answer: D
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Evaluate the polynomial for the given values of x and y.x3 + 3x2y + 3xy2 + y3; x = -3 and y = -2
A. -35 B. -125 C. 25 D. -15
Solve.A prime number is an emirp if it becomes a different prime number when its digits are reversed. Determine whether or not the prime number 41 is an emirp.
A. Yes B. No
Solve the system using matrices. If there is no solution or if there are infinitely many solutions and a system's equations are dependent, so state.
A. {(6, -7)} B. {(6, 7)} C. no solution or ? D. infinitely many solutions; dependent equations
Represent the linear system as an augmented matrix. 2x - 2y + 5z = -16-2x + 9y + 3z = 56 7x + 7y + 4z = 83
A. 
B. 
C. 
D. 