Solve the problem.A power boat in still water maintains a speed of 20 miles per hour. The boat heads directly across a river perpendicular to the current which has a speed of 5 miles per hour. Find the actual speed and direction of the boat, rounded to the nearest whole number.
A. 10 miles per hour; 30° off course
B. 21 miles per hour; 14° off course
C. 11 miles per hour; 27° off course
D. 20 miles per hour; 14° off course
Answer: B
Mathematics
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Construct a boxplot as requested.The normal monthly precipitation (in inches) for August is listed for 20 different U.S. cities. Construct a boxplot for the data set.
A. 
B. 
C. 
D. 
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Use the distributive property to multiply. Then, if possible, simplify the resulting expression.
(x - 15)
A. 3x - 75
B. 
x - 9
C. 
x - 3
D. 3x - 3
Mathematics
Write the number in scientific notation.63,000,000
A. 6.3 × 10-7 B. 6.3 × 10-6 C. 6.3 × 107 D. 6.3 × 106
Mathematics
Find the range of the function.f(x) = -x2 - 12x - 40
A. [6, ?) B. [0, ?) C. (-?, 6] D. (-?, -4]
Mathematics