A tank contains 1050 L of brine with 20 kg of dissolved salt. Pure water enters the tank at a rate of 16 L/min. The solution is kept thoroughly mixed and drains from the tank at the same rate. How much salt is in the tank after 20 minutes?
What will be an ideal response?
14.75 kg
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Find the vertex, the focus, and the directrix of the parabola.(y + 2)2 = 20(x + 3)
A. V: (3, 2); F: (8, 2); D: x = -2 B. V: (-3, -2); F: (2, -2) ; D: x = -8 C. V: (-3, -2); F: (-8, -2); D: x = 2 D. V: (-2, -3); F: (3, -3); D: x = -7
Determine whether the ordered pair is a solution of the given linear equation.-2y + 3x = -15; (5, 0)
A. yes B. no
Provide an appropriate response.A company must fill an order for 200 units of its product. It wishes to distribute the production between its two plants, plant A and plant B. The total cost function isc = 300qA + 200qB + 
+ 8000, where qA and qB are the number of units produced at plant A and plant B, respectively. To minimize costs, plant A and plant B should produce
A. 50 units and 150 units, respectively. B. 100 units and 100 units, respectively. C. 175 units and 25 units, respectively. D. 150 units and 50 units, respectively. E. 25 units and 175 units, respectively.
Graph the function.f(x) = e3x - 3
A. 
B. 
C. 
D. 