Write the following as an algebraic expression in u, u > 0.sin(tan-1 u)
A. 
B. 
C. 
D. u
Answer: B
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Solve the problem. Use a calculator with an LN or a LOG key.An earthquake was recorded with an intensity which was 
times more powerful than a reference level earthquake, or 
What is the magnitude of this earthquake on the Richter scale (rounded to the nearest tenth)? The magnitude on the Richter scale of an earthquake of intensity I is 
A. 3.7 B. 4.7 C. 0.5 D. 10.8
Subtract.(-4a5 - 18a2) - (-13a5 + 13a2)
A. 9a5 - 5a2 B. 9a5 - 31a2 C. -17a5 - 5a2 D. -22a7
Solve the problem.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 $1,600. 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. $10,000 at 5%, $10,000 at 6%, $5,000 at 8% B. $8,000 at 5%, $10,000 at 6%, $7,000 at 8% C. $10,000 at 5%, $5,000 at 6%, $10,000 at 8% D. $5,000 at 5%, $10,000 at 6%, $10,000 at 8%
Multiply.-1000 × (-706.941700)
A. -7069.417 B. 706,941.7 C. -7,069,417 D. 70,694.17