Evaluate the expression without using a calculator.
A. 28
B. 16
C. 14
D. 38,416
Answer: C
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Find the indicated derivative.Find y " if y = 4x sin x.
A. y " = - 8 cos x + 4x sin x B. y " = 4 cos x - 8x sin x C. y " = - 4x sin x D. y " = 8 cos x - 4x sin x
Identify the number represented on the abacus.
A. 99,999 B. 11,111 C. 55,555 D. 66,666
Decide whether or not the functions are inverses of each other.f(x) = 2x - 7, g(x) = 
A. Yes B. No
The owner of a luxury motor yacht that sails among the 4,000 Greek islands charges $600/person/day if exactly 20 people sign up for the cruise. However, if more than 20 people sign up (up to the maximum capacity of 90) for the cruise, then each fare is reduced by $5 for each additional passenger. Assume at least 20 people sign up for the cruise and let x denote the number of passengers above 20. Find a function R giving the revenue/day realized from the charter. ?
A. 
B. 
C. 
D. 
E. 