Find the exact value of cos(x-y) given that sec x = 3 / 2, csc y = 3, and x and y are in quadrant 1.
What will be an ideal response?
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Find the total area of the region between the curve and the x-axis.y = x2 - 6x + 9; 2 ? x ? 4
A. 
B. 
C. 
D. 
Use Cramer's rule to solve the system. x + y + z - w = 6 2x - y + 3z + 4w = -4 4x + 2y - z - w = -13 -x - 2y + 4z + 3w = 12
A. 
B. 
C. Can't use Cramer's rule, D = 0
D. 
Solve the problem.A 100 gal tank is half full of distilled water. At time = 0, a solution containing 2 lb/gal of concentrate enters the tank at the rate of 4 gal/min, and the well-stirred mixture is withdrawn at the rate of 
When the tank is full, how many pounds of concentrate will it contain?
A. 175 pounds B. 150 pounds C. 200 pounds D. 187.5 pounds
A doctor orders tetracycline elixir qid for a child weighing 60 lb at a dosage of 8 mg/kg/day in equally divided doses. How many mg would one dose contain?
A. 54 mg/dose B. 108 mg/dose C. 216 mg/dose D. 72 mg/dose