Perform the indicated operation.8p(5p2 - 11p - 10)
A. 40p3 - 168p2
B. 40p3 - 88p2 - 80p
C. 40p3 - 11p2 - 80p
D. 40p3 - 88p2 - 10p
Answer: B
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The scalar function div(grad f) = ? ? ? f (also written ?2f) is called the Lapalacian, and the function f satisfying ?2f = 0 is said to be harmonic. ?2f = fxx + fyy + fzz. Find ?2f for the following function and decide if it is harmonic.f(x, y, z) = x2yz - 
A. harmonic B. not harmonic
Annual sales (in millions of units) of hand-held computers are expected to grow in accordance with the function
?
?
where 
is measured in years, with 
corresponding to 1997. How many hand-held computers will be sold over the 3-year period between the beginning of 1997 and the end of 1999? Round your answer to two decimal places, if necessary.
Fill in the blank(s) with the appropriate word(s).
Solve the problem.A group of 4 friends goes bowling. How many different possibilities are there for the order in which they play if the youngest person is to bowl first?
A. 6 B. 3 C. 24 D. 4
Solve for the specified variable.S = 
for r
A. r = 
B. r = 
- 1
C. r = 
D. r = S - a