Simplify.
A. -6i
B. 6
C. -6
D. 6i
Answer: D
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Solve the problem.Find the derivative of the function 
at the point 
in the direction in which the function decreases most rapidly.
A. - 
B. - 
C. - 
D. - 
Solve.John and Tony start from GraysLake at the same time and head for a town 10 miles away. John walks twice as fast as Tony and arrives 3 hours before Tony. Find how fast each walks.
A. Tony's speed = 
mph and John's = 
mph.
B. Tony's speed = 3 mph and John's = 6 mph.
C. Tony's speed = 
mph and John's = 
mph.
D. Cannot be determined with information given
Solve. Write the fraction in simplest form.Raya's Cinema received $3872 in movie admission tickets for one day. About 
of this amount was for G-rated movies. Find the amount of money received from G-rated movies.
A. $352 B. $704 C. $176 D. $21,296
Simplify the expression.1 + 3(x + 8y)
A. 4x + 8y B. 1 + 24xy C. 1 + 3x + 8y D. 1 + 3x + 24y