Write the following as the product of a real number and i.
A. ± 11
B. -11i
C. 11i
D. -i
Answer: C
Mathematics
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Perform the indicated operation and, if possible, simplify.
? 
A. 
B. 
C. - 
D. - 
Mathematics
Evaluate the function 
at x = 3. 6 Round to 3 decimal places.
A) 5.287 B) 4.680 C) 20.055 D) 2.572 E) 1.690
Mathematics
Solve the problemA recent advertisement claimed that 2 out of every 3 doctors recommend a certain herbal supplement to increase energy levels. If a local hospital employs 140 doctors, how many doctors would you expect to recommend the supplement? (Round to the nearest whole number, if necessary.)
A. 47 doctors B. 93 doctors C. 210 doctors D. 840 doctors
Mathematics
Solve the logarithmic equation.log 5x = log 3 + log (x + 4)
A. 
B. 6
C. -6
D. 
Mathematics