Determine if the function is increasing or decreasing over the interval indicated.f(x) = 
+ 7; (0, ?)
A. Increasing
B. Decreasing
Answer: B
Mathematics
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Solve using the problem-solving strategy for systems of linear equations.Julie and Eric row their boat (at a constant speed) 27 miles downstream for 3 hours, helped by the current. Rowing at the same rate, the trip back against the current takes 9 hours. Find the rate of the current.
A. 6 mph B. 2.5 mph C. 4 mph D. 3 mph
Mathematics
Use the figure to answer the question.The weights (in pounds) of a group of high school students are listed below in a 
plot.
What is the most frequent weight?
A. 159 B. 114 C. 142 D. 99
Mathematics
Use a calculator to approximate the square root to three decimal places. 
A. 8.715 B. 8.723 C. 76.000 D. 8.718
Mathematics
Solve the equation.
(x + 6) = 
(x + 8)
A. {3} B. -4 C. -12 D. 4
Mathematics