Give a geometric description of the set of points whose coordinates satisfy the given conditions.8 ? z ? 9
A. All points between z = 8 and z = 9 in the x-y plane
B. The slab between the planes z = 8 and z = 9 (including planes)
C. No set of points satisfies the given relation
D. The line from z = 8 to z = 9
Answer: B
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A. 4 B. 8 C. 5 D. 2
Solve the problem.During each cycle, the velocity v (in ft/s) of a robotic welding device is given by 
where t is the time (in s). Find the expression for the displacement s (in ft) as a function of t if 
for 
A. s = t2 - 15 tan-1 
B. s = t2 - 15 sin-1 
C. s = t2 - 
tan-1 
D. s = t2 - 
tan-1 
Memory. In a certain memory experiment, the rate of memorizing is given by:
where M (t ) is the number of Spanish words memorized in t minutes. The subject has no Spanish words memorized at the beginning of the experiment. How many words are memorized in 14 minutes? (Round answer to the nearest whole number.)
Add or subtract as indicated. Simplify if necessary.
+ 
A. 
B. 
C. 
D. 