Translate the sentence to an equation using the variable x. Then solve the equation.When 
of a number is added to 24, the result is 27.
A. 27 + 
x = 24; 12
B. 24 + 
x = 27; 12
C. 
+ x = 27; 27
D. 
x - 24 = 27; 204
Answer: B
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Solve the problem.Two trains leave a train station at the same time. One travels east at 8 miles per hour. The other train travels west at 7 miles per hour. In how many hours will the two trains be 27 miles apart?
A. 0.9 hr B. 1.8 hr C. 3.6 hr D. 2.3 hr
Solve the problem.Find out how long it takes a $3100 investment to earn $300 interest if it is invested at 8% compounded monthly. Round to the nearest tenth of a year. Use the formula 
A. 1 years B. 1.6 years C. 1.4 years D. 1.2 years
Simplify.
A. 578 B. 68 C. 32 D. 34
A ladder 20 feet long is leaning against the wall of a house (see the figure below). The base of the ladder is pulled away from the wall at a rate of 2 feet per second. How fast is the top of the ladder moving down the wall when its base is 14 feet from the wall? Round your answer to two decimal places.
?
?
, 
?
A. 6.00 ft/sec
B. -5.33 ft/sec
C. -1.96 ft/sec
D. 5.33 ft/sec
E. -5.00 ft/sec