Multiply and simplify.
? 
A. 
B. 
C. - 
D. - 
Answer: D
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Solve the problem.A piece of land is shaped like a right triangle. Two people start at the right angle of the triangle at the same time, and walk at the same speed along different legs of the triangle. If the area formed by the positions of the two people and their starting point (the right angle) is changing at 
then how fast are the people moving when they are 
from the right angle? (Round your answer to two decimal places.)
A. 5.00 m/s B. 2.00 m/s C. 0.50 m/s D. 1.00 m/s
Find the dot product v ? w.v = i + j and w = i + j - k
A. 3 B. 1 C. 2 D. -2
Add or subtract.- 
+ 
A. 
B. - 1
C. - 
D. 1
Solve the problem.The following data represents the number of employees at a company at the start of each year since the company began. 
Using the line of best fit for the data set, predict the number of employees at the start of the 10th year.
Fill in the blank(s) with the appropriate word(s).