Solve the problem.The speed of a stream is 4 mph. If a boat travels 56 miles downstream in the same time that it takes to travel 28 miles upstream, what is the speed of the boat in still water?
A. 8 mph
B. 14 mph
C. 15 mph
D. 12 mph
Answer: D
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Solve the problem.The voltage v (in volts) induced in a tape head is given by 
where t is the time (in seconds). Find the average value of v over the interval from t = 0 to t = 2. Round to the nearest volt.
A. 1564 volts B. 6 volts C. 40 volts D. 194 volts
Construct an extended frequency distribution for the set of numbers and calculate the mean of the grouped data. Follow the instructions for class width.Use a class width of 0.10 beginning at 0.00. (Hint: The first class is 0.00 - 0.09.)0.620.920.620.610.270.280.270.270.010.010.790.090.770.270.100.720.610.190.720.270.710.110.260.760.92?????
What will be an ideal response?
Solve the problem.There were 32,000 people at a ball game in Los Angeles. The day's receipts were $280,000. How many people paid $14 for reserved seats and how many paid $6 for general admission?
A. 10,000 paid $14 and 22,000 paid $6 B. 11,000 paid $14 and 21,000 paid $6 C. 22,000 paid $14 and 10,000 paid $6 D. 21,000 paid $14 and 11,000 paid $6
Graph the quadratic function using its vertex, axis of symmetry, and intercepts.f(x) = 3x2 - 6x + 6
A. vertex (-1, 3)
intercept 
B. vertex (1, 3)
intercept 
C. vertex (-1, 3)
intercept (0, 6)
D. vertex (1, 3)
intercept (0, 6)