Write an expression for the nth term of the sequence 
Assume that n begins with 1.
A. 
B. 
C. 
D. 
E. 
Answer: C
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Solve.Persons taking a 30-hour review course to prepare for a standardized exam average a score of 620 on that exam. Persons taking a 70-hour review course average a score of 782. Find a linear equation which fits this data, and which relates score to review time. Use this equation to predict an average score for persons taking a 51-hour review course. Round to the nearest tenth.
A. 697.8 B. 719.1 C. 709.3 D. 705.1
Solve the problem.During a drought, the water level in a river dropped 3 inches each day for 6 straight days. What was the change in the water level of the river during this this period?
A. -18 inches B. 18 inches C. -9 inches D. 9 inches
Provide an appropriate response.For x2y + xz + z2 = 4, evaluate 
when x = -1, y = 2, z = -1.
What will be an ideal response?
Solve the problem.Julie and Eric row their boat (at a constant speed) 16 miles downstream for 2 hours, helped by the current. Rowing at the same rate, the trip back against the current takes 8 hours. Find the rate of the current.
A. 2.5 mph B. 3 mph C. 5 mph D. 4 mph