Solve.A comet follows the hyperbolic path described by 
where x and y are in millions of miles. If the sun is the focus of the path, how close to the sun is the vertex of the path?
A. 1.7 million mi
B. 14 million mi
C. 5 million mi
D. 2 million mi
Answer: D
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?Which of the following is a divisibility rule for 18? ?
A. If a number ends in an even number and is divisible by 3, then it is divisible by 18. B. ?If a number ends in an even number and the sum of digits is divisible by 9, then it is divisible by 18. C. ?If last two digits of a number are divisible by 4 and the sum of digits is divisible by 9, then it is divisible by 18. D. If a number ends in an even number and the sum of digits is divisible by 6, then it is divisible by 18. E. ?If the sum of the digits of a number is divisible by 3 and 6-rule works, then it is divisible by 18.
Find 
.y = 5ex
A. 5ex (ex) B. 5ex ln 5 (ex) C. 5ex ln 5 D. (ex)5ex - 1
Solve.Using the formula to find Fahrenheit (F) in terms of Celsius (C), F = 
C + 32, find the range (to the nearest tenth) of the Fahrenheit temperature when the range of the Celsius temperature is between 2°C and 6°C, inclusive.
A. Between 3.6°F and 10.8°F, inclusive B. Between 33.1°F and 32.8°F, inclusive C. Between 19.6°F and 26.8°F, inclusive D. Between 35.6°F and 42.8°F, inclusive
Add.+ 
A. 13.1843 B. 13.1633 C. 13.0633 D. 13.1643