Solve the problem.A police helicopter is monitoring the speed of two cars on a straight road. The helicopter is at an altitude of 
feet directly above the road. At one instant, the angle of elevation from the first car to the helicopter is 
and the angle of elevation from the second car to the helicopter is 
How far apart are the two cars to the nearest foot?
A. 620 ft
B. 4809 ft
C. 207 ft
D. 5092 ft
Answer: D
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Solve.x2 + 2x - 4 ? 0
A. (-?, -1 - 
] ? [-1 + 
, ?)
B. (-?, -1 - 
) ? (-1 + 
, ?)
C. (-?, -
] ? [
, ?)
D. [-1 - 
, -1 + 
]
Solve problems using a calculator.A high-speed stamping machine can produce medium flat parts at the rate of 76 per minute. If an order calls for 342,000 parts to be stamped, how many hours will it take to complete the job? (60 minutes = 1 hour).
A. 75 hours B. 95 hours C. 125 hours D. 100 hours
Find the exact value of the expression.
A. 
B. 
C. - 
D. - 
Solve the problem.The amount of money in an account is given by 
where P is the principal invested, r is the interest rate (as a decimal), and t is the time of the investment. Find the amount at the end of 3 years if $300 is invested at 7%.
A. $321.00 B. $1473.90 C. $367.51 D. $510.00