Solve the problem.Jill is 18 kilometers away from Joe. Both begin to walk toward each other at the same time. Jill walks at 2 kilometers per hour. They meet in 4 hours. How fast is Joe walking?
A. 2 kilometers per hour
B. 4.5 kilometers per hour
C. 3.5 kilometers per hour
D. 2.5 kilometers per hour
Answer: D
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Determine whether the variation between the indicated quantities is direct or inverse.The base length and height of a triangle of area 6 cm2
A. Direct B. Inverse
Solve the problem.A ship sailing parallel to shore sights a lighthouse at an angle of 15° from its direction of travel. After traveling 2 miles farther, the angle is 25°. At that time, how far is the ship from the lighthouse?
A. 1.22 mi B. 2 mi C. 4.87 mi D. 2.98 mi
Solve the problem.The value of a stock is given by the function 
where V is the value of the stock after time t, in months. When will the value of the stock be 
?
A. 0.3 months B. 1.5 months C. 1.8 months D. 3.1 months
Determine whether the equation has no solution, one solution, or infinitely many solutions.11x = 12(x + 10) - x
A. One solution B. Infinitely many solutions C. No solutions