Simplify.
A. 
B. 
C. 
D. 
Answer: C
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Find projv u.v = i + j + k, u = 4i + 12j + 3k
A. 
i + 
j + 
k
B. 
i + 
j + 
k
C. 
i + 
j + 
k
D. 
i + 
j + 
k
Provide an appropriate response.Perform the indicated operation, rationalize denominator, and simplify if possible: 
Fill in the blank(s) with the appropriate word(s).
Solve.Linda invests $25,000 for one year. Part is invested at 5%, another part at 6%, and the rest at 8%. The total income from all 3 investments is $1600. The income from the 5% and 6% investments is the same as the income from the 8% investment. Find the amount invested at each rate.
A. At 5%: $10,000; at 6%: $5000; at 8%: $10,000 B. At 5%: $10,000; at 6%: $10,000; at 8%: $5000 C. At 5%: $8000; at 6%: $10,000; at 8%: $7000 D. At 5%: $5000; at 6%: $10,000; at 8%: $10,000
Determine whether the three points are collinear.(-5, -11), (4, 7), (9, 17)
A. Yes B. No