Solve.While traveling in a car, the centrifugal force a passenger experiences as the car drives in a circle varies jointly as the mass of the passenger and the square of the speed of the car. If the a passenger experiences a force of 81 newtons when the car is moving at a speed of 30 kilometers per hour and the passenger has a mass of 100 kilograms, find the force a passenger experiences when the car is moving at 50 kilometers per hour and the passenger has a mass of 50 kilograms.
A. 125 newtons
B. 112.5 newtons
C. 150 newtons
D. 100 newtons
Answer: B
Mathematics
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Express the number in standard notation.3.203 × 105
A. 3,203,000 B. 320,300 C. 160.15 D. 32,030
Mathematics
Determine whether the pair of rational expressions is equivalent.
and 
A. Not Equivalent B. Equivalent
Mathematics
Simplify the radical.
A. 3
B. 1
C. 16
D. 2
Mathematics
Solve the problem.The revenue for a small company is given by the quadratic function 
where t is the number of years since 1998 and r(t) is in thousands of dollars. If this trend continues, find the year after 1998 in which the company's revenue will be $1632 thousand. Round to the nearest whole year.
A. 2006 B. 2008 C. 2014 D. 2007
Mathematics