Solve the problem.The speed of a stream is 6 mph. If a boat travels 84 miles downstream in the same time that it takes to travel 42 miles upstream, what is the speed of the boat in still water?
A. 12 mph
B. 20 mph
C. 21 mph
D. 18 mph
Answer: D
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Find the graph that matches the given system of equations.2x + y = 13
A. 
B. 
C. 
D. 
Solve. If needed, round money amounts to two decimal places and all other amounts to one decimal place.12% of students at a university attended a lecture. If 6000 students are enrolled at the university, about how many students attended the lecture?
A. 72,000 students B. 720 students C. 72 students D. 7200 students
Solve the problem.From a point on a straight road, John and Fred ride bicycles in opposite directions. John rides 8 miles per hour and Fred rides 7 miles per hour. In how many hours will they be 75 miles apart?
A. 6 hr B. 5 hr C. 4 hr D. Not enough information
Begin by graphing the standard absolute value function f(x) = 
. Then use transformations of this graph to graph the given function.g(x) = 2
A. 
B. 
C. 
D. 