As shown in the illustration, a starfish has the shape of a pentagon. Look at the illustration of the fruit. How many sides does this polygon have?
?
?
A. 24
B. 16
C. 2
D. 5
E. none of these
Answer: D
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Round the number to the nearest thousandth, nearest hundredth, and nearest tenth. Remember to round from the original number.0.9485
A. 0.949, 0.95, 0.9 B. 0.949, 0.94, 1.0 C. 0.9485, 0.948, 0.94 D. 0.948, 0.94, 0.9
Decide whether the relation defines a function.
A. Function B. Not a function
Find a rectangular equation for the plane curve defined by the parametric equations.x = 
, y = 2t + 5; 0 < t < ?
A. y = 2x2 - 5; for x in 0 < x < ?
B. y = 2
+ 5; for x in 0 < x < ?
C. y = 2x2 + 5; for x in 0 < x < ?
D. y = 2
- 5; for x in 0 < x < ?
Solve the problem.Suppose that in a memory experiment the rate of memorizing is given by 
where M'(t) is the memory rate, in words per minute. How many words are memorized in the first 
(from t = 0 to t = 20)?
A. 144 words B. 24 words C. 64 words D. 104 words