Solve the problem.The speed of a stream is 4 mph. If a boat travels 94 miles downstream in the same time that it takes to travel 47 miles upstream, what is the speed of the boat in still water?
A. 8 mph
B. 12 mph
C. 14 mph
D. 15 mph
Answer: B
Mathematics
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In a school survey, students showed these preferences for instructional materials. Answer the question.
About how many students would you expect to prefer lectures in a school of 900 students?
A. About 324 students B. About 180 students C. About 162 students D. About 18 students
Mathematics
Use the rules for exponents to rewrite the expression and then evaluate the new expression. (-2)2(-2)3
A. -64
B. -32
C. 
D. 
Mathematics
Solve.
+ 
= 
A. - 
B. 
C. -2, 
D. no solution
Mathematics
Convert to decimal notation.3.965 × 10-5
A. -396,500 B. 0.0003965 C. 0.00003965 D. 0.000003965
Mathematics