Solve the inequality using a sign chart.
? 0
A. - 
? x ? 
or x ? 7
B. - 
< x < 
or x > 7
C. x ? - 
or 
? x ? 7
D. x < - 
or 
< x < 7
Answer: C
Mathematics
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Add, first finding the LCD. Simplify, if possible.
+ 
+ 
A. 
B. 
C. 
D. 
Mathematics
Solve.log9 (x - 4) + log9 (x - 4) = 1
A. -
, 
B. -7, 7
C. 7
D. 
Mathematics
Solve the problem by integration.An object at the end of a spring is immersed in liquid. Its velocity (in cm/sec) is then described by the equation 
where t is the time (in sec). Find the displacement s as a function of t if 
for t = 0 sec.
A. s = e-3t + 
e-9t - 
B. s = -e-3t + 
e-9t + 
C. s = -e-3t - 
e-9t - 
D. s = -e-3t - 
e-9t + 
Mathematics
Subtract.
A. 74 B. 174 C. 164 D. 1104
Mathematics