Find the regression line for the given data. Round to two decimal places, if necessary.
A. y = 0.73x + 4.98
B. y = 0.63x + 4.88
C. y = 0.53x + 4.88
D. y = 0.43x + 4.98
Answer: C
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Match the graph with the most appropriate sentence.
Hours of treatment
A. Fluids were provided at a constant rate during the first four hours of treatment and then were discontinued. B. Fluids were provided at an increasing rate during the first four hours of treatment and then were provided at a constant rate. C. Fluids were provided at an increasing rate during the first four hours of treatment and then were discontinued. D. Fluids were provided at a constant level during the first four hours of treatment and then were discontinued.
Graph the function.y = -tan 
A. 
B. 
C. 
D. 
Simplify the expression. Express the answer so that only positive exponents occur. Assume that all variables are positive.(x5y4)7/3
A. x15/7y12/7 B. x22/3y19/3 C. x35/3y28/3 D. x28/3y35/3
Identify the fraction as a proper fraction, an improper fraction, or a mixed number.
A. Improper fraction B. Mixed number C. Proper fraction