Solve the problem.A rock group is producing a new CD. The cost in dollars to produce a CD is given by 
where x is the number of man hours of work required and y is the number of hours of studio time required. Find the minimum cost.
A. $18,068
B. $19,898
C. $17,468
D. $17,248
Answer: C
Mathematics
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Find the flux of the curl of field F through the shell S.F = (z - y)i + (x - z)j + (z - x)k; S: r(r,? ) = r cos?i + r sin?j + (9 - r2)k, 0 ? r ? 3 and 
A. 18? B. -18? C. -36? D. 36?
Mathematics
Evaluate the expression.
3
A. 
B. 3
C. 
D. 
Mathematics
Solve the problem.R and R' are similar rectangles. Suppose that the width of R is a and the width of R' is 4a. If the perimeter of R is 15 in., what is the perimeter of R' ?
A. 30 in. B. 60a in. C. 120 in. D. 60 in. E. none of these
Mathematics
Write the number in word form.31,435
A. Three thousand, one hundred thirty-five B. Three hundred one thousand, four hundred thirty-five C. Thirty-one thousand, four hundred thirty-five D. Thirty-one thousand, forty-five
Mathematics