If the expression is in exponential form, write it in radical form. If it is in radical form, write it in exponential form.
3/8
A. 
8
B. 
3
C. 
3
D. 
8
Answer: C
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Solve.The president of a certain university makes three times as much money as one of the department heads. If the total of their salaries is $190,000, find each worker's salary.
A. president's salary = $95,000; department head's salary = $47,500 B. president's salary = $47,500; department head's salary = $142,500 C. president's salary = $142,500; department head's salary = $47,500 D. president's salary = $14,250; department head's salary = $4750
Solve the problem.From a point on a straight road, John and Fred ride bicycles in opposite directions. John rides 7 miles per hour and Fred rides 10 miles per hour. In how many hours will they be 68 miles apart?
A. 5 hr B. 3 hr C. 4 hr D. Not enough information
Multiply. Simplify and leave the numerator and denominator in your answer in factored form.
? 
A. - 
B. 
C. - 
D. - 
Solve the problem.The wind is blowing at 10 knots. Sailboat racers look for a sailing angle to the 10-knot wind that produces maximum sailing speed. This situation is now represented by the polar graph in the figure shown below. Each point (r, ?) on the graph gives the sailing speed, r, in knots, at an angle ? to the 10-knot wind. What angle to the wind produces the maximum sailing speed? What is the speed to the nearest knot, of the sailboat sailing at 90° angle to the wind? 
A. 90°; 7 knots B. 120°; 8 knots C. 120°; 7 knots D. 90°; 5 knots