Translate the problem to a system of equations, then solve using Cramer's Rule.Twice the water flow in the hot-water pipe is the same as three times the flow in the cold-water pipe. The combined flow is 1200 liters per hour. What is the flow in each pipe?
A. 600 liters/hr hot, 400 liters/hr cold
B. 400 liters/hr hot, 600 liters/hr cold
C. 720 liters/hr hot, 480 liters/hr cold
D. 480 liters/hr hot, 720 liters/hr cold
Answer: C
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Solve.Avegail needs to determine the distance at certain points across a lake. Her crew and she are able to measure the distances shown on the diagram below. Find how wide the lake is to the nearest tenth of a meter.
A. 8.4 m B. 115.3 m C. 143.2 m D. 70 m
Factor the trinomial by grouping.2x2 + 7x + 14x + 49
A. (2x + 7)(2x + 7) B. (x + 7)(2x + 7) C. (2x + 7)(7x + 2) D. prime
Divide and simplify. 5x ÷ 
A. 
B. 
C. 
D. 
Solve the problem.A restaurant has a capacity of 39 patrons. If the restaurant is 
full, how many patrons are at the restaurant?
A. 13 patrons B. 24 patrons C. 28 patrons D. 26 patrons