?Find the marginal profit for producing x units. (The profit is measured in dollars.)
?
?
A. ?
dollars
B. 
dollars
C. ?
dollars
D. ?
dollars
E. ?
dollars
Answer: A
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Find the exact value of the expression.cos 
cos 
+ sin 
sin 
A. 1
B. 
C. 
D. 
Solve the problem.An election involving 6 candidates and 20 voters is held and the results of the election are to be determined using the Borda count method. The minimum number of points a candidate can receive is
A. 60 points. B. 20 points C. 15 points D. 120 points. E. none of these
Solve the problem.The half-life of a certain radioactive substance is 5 years. Suppose that at time 
there are 28 g of the substance. Then after t years, the number of grams of the substance remaining will be N(t) = 28
t/10How many grams of the substance will remain after 45 years?Round to the nearest hundredth of a gram.
A. 1.24 g B. 0.15 g C. 0.62 g D. 0.31 g
Graph the function.y = cos x
A. 
B. 
C. 
D. 