If r is a positive number and the point (x, y) is in the indicated quadrant, decide whether the given ratio is positive or negative.II, 
A. Positive
B. Negative
Answer: B
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Provide an appropriate response.What form do planes perpendicular to the y-axis have in spherical coordinates?
A. ? = a csc ? csc ? B. ? = a sin ? sin ? C. ? = a csc ? D. ? = a csc ?
Solve the problem.The cost, in millions of dollars, for a company to manufacture x thousand automobiles is given by the function 
Find the number of automobiles that must be produced to minimize cost.
A. 45 thousand automobiles B. 3 thousand automobiles C. 9 thousand automobiles D. 6 thousand automobiles
Use Cramer's rule to solve the system of linear equations in three variables.
A. (1, 6, 1) B. (1, -6, -1) C. (2, 4, 1) D. (6, 1, 6)
Find the unpaid balance at the end of the month for the account. UnpaidBalance atFinance
Apr?$538.20$196.34$22.38$125.00Finance rate is 1.5% on the unpaid balance.
A. $595.23 B. $639.99 C. $57.03 D. $617.61