Dominic is an industrial designer who's developing an office chair that is more comfortable for tall individuals. He hires a software engineering firm to develop a simulation that can simulate the chair used by a person working at a desk, and then come up with an estimate of the resulting comfort level. Which detail is least necessary for this simulation?
A. The heights of the most popular office desks
B. The three-dimensional shape of the chair
C. The range of colors available for the chair’s fabric
D. The tendency of the chair to incline backward in response to pressure from the user

Pls do you believe that the use of 3d animation has grown in feature films over the last few years? if so, do you think the trend will continue? what are the forces driving this trend?

Suppose there is a relation r(a, b, c) with a b+-tree index with search keys (a, b).1. what is the worst-case cost of finding records satisfying 10 < a < 50 using this index, in terms of the number of records n1, retrieved and the height h of the tree? 2. what is the worst-case cost of finding records satisfying 10 < a < 50 and 5 < b < 10 using this index, in terms of the number of records n2 that satisfy this selection, as well as n1 and h defined above? 3. under what conditions on n1 and n2, would the index be an efficient way of finding records satisfying the condition from part (2)?

How would you categorize the software that runs on mobile devices? break down these apps into at least three basic categories and give an example of each.