Multiply.
? 
A. 9x
B. 14x
C. 
D. 
Answer: D
Mathematics
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Solve the problem.During each cycle, the vertical displacement s of the end of a robot arm is given by 
where t is the time. Find the expression for the instantaneous velocity of the end of the robot arm.
A. 8t3 - 15t2 + 6t - 2 B. 8t3 - 13t2 + 6t + 2 C. 2t3 - 15t2 + 3t - 2 D. 8t2 - 10t + 2
Mathematics
Write using radical notation. Then, simplify, if possible.
A. 2
B. 2p9/7
C. Cannot be simplified
D. 
Mathematics
Find the opposite of the real number.-2.1
A. 2.1
B. -2.1
C. 
D. 
Mathematics
Find sec t given that sin t =  figure 1.png)
and tan t > 0.
 figure 2.png)
Mathematics