In a school survey, students showed these preferences for instructional materials. Answer the question.
About how many students would you expect to prefer computers in a school of 700 students?
A. About 140 students
B. About 36 students
C. About 126 students
D. About 252 students
Answer: D
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The volume of a right circular cone of radius r and height h is 
Suppose that the radius and height of the cone are changing with respect to time t.
a. Find a relationship between 
b. At a certain instant of time, the radius and height of the cone are 12 in. and 13 in. and are increasing at the rate of 0.2 in./sec and 0.5 in./sec, respectively. How fast is the volume of the cone increasing?
Prepare a probability distribution for the experiment. Let x represent the random variable, and let P represent the probability.Three coins are tossed, and the number of heads is noted.
A. 
B. 
C. 
D. 
Graph the hyperbola.
- 
= 1
A. 
B. 
C. 
D. 
Find the distance between the points (4, -3) and (11, -3). ?
A. 10
B. 
C. 3
D. 
E. 7