Solve the problem.The position of a particle moving along a coordinate line is s = 
, with s in meters and t in seconds. Find the particle's velocity at 
A. 
m/sec
B. - 
m/sec
C. 
m/sec
D. 
m/sec
Answer: C
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Decide whether the statement is true or false.The corresponding angles of two parallel lines cut by a transversal are always supplementary.
A. True B. False
Solve the problem.A conservation officer needs to know the width of a river in order to set instruments correctly for a study of pollutants in the river. From point A, the conservation officer walks 100 feet downstream and sights point B on the opposite bank to determine that ? = 30° (see figure). How wide is the river (round to the nearest foot)? 
A. 50 ft B. 58 ft C. 173 ft D. 115 ft
Graph the inequality on a number line. Then write the solution in interval notation.3 ? x < 7
A. (3, 7)
B. [3, 7)
C. [3, 7]
D. (3, 7]
Simplify.
- 2
- 5
A. -39
B. -7
C. -7
D. -39