Solve the problem.To approximate the speed of a river, a circular paddle wheel with radius 0.65 feet is lowered into the water. If the current causes the wheel to rotate at a speed of 12 revolutions per minute, what is the speed of the current? Express the answer in miles per hour rounded to two decimal places, if necessary.
A. 49.01 miles per hour
B. 0.09 miles per hour
C. 0.28 miles per hour
D. 0.56 miles per hour
Answer: D
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The following table shows, for females ages 55 to 64, the number of heart disease deaths H per 100,000 at time t years after 2000.
t 0 3 4 7 H 159 147 138 123?
A: Use the average rate of change from 2004 to 2007 to estimate the value of 
for 2004. Round your answer to two decimal places.B: Explain in practical terms the meaning of the number you found in part A. Round your result to the nearest whole number.C: Use your answer from part A to estimate the number heart disease deaths per 100,000 females in 2006. Round your result to the nearest whole number.
What will be an ideal response?
Find the equation of the parabola corresponding to the given information.The parabola has focus ( - 1 , 0 ) and directrix x = 1.
A. x = 
y2
B. x = - 
y2
C. y = 
x2
D. y = - 
x2
Reduce the rational expression to lowest terms.
A. 3x2 - 8
B. 
C. 
D. 3x - 1
Decide whether the proportion is true or false.
= 
A. True B. False