Find the length of the curve.The circle r = 9 sin ?
A. 
?
B. 18?
C. 81?
D. 9?
Answer: D
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The following table shows some function values.
1.6 3.2 5.3 6.5
24 40 61 73?
Which formula below fits these data?
?
A. 
B. ?
C. ?
D. ?
Decide whether the statement is true or false.The difference of two irrational numbers is always irrational.
A. True B. False
Solve the problem.The curve x = y3 is revolved about the x-axis. Find a parametrization of the surface of revolution and then find the equation of the tangent plane at the point 
What will be an ideal response?
Solve.Kim decided to do some spring cleaning. She spent 
hours cleaning her garage on Saturday. The next day she spent 
hours cleaning her basement. What was the total amount of time she spent cleaning that weekend?
A. 9
hours
B. 9 hours
C. 1
hours
D. 8 hours