Part of $7,000 is invested at 10%, another part at 11%, and the remainder at 12% yearly interest. The total yearly income from the three investments is $795. The sum of the amounts invested at 10% and 11% equals the amount invested at 12%. How much is invested at each rate?
A. $1,000 at 10%, $2,500 at 11%, and $3,500 at 12%
B. $500 at 10%, $2,000 at 11%, and $4,000 at 12%
C. $1,500 at 10%, $2,000 at 11%, and $3,500 at 12%
D. $500 at 10%, $2,500 at 11%, and $4,000 at 12%
E. $1,500 at 10%, $3,000 at 11%, and $3,000 at 12%
Answer: A
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Find the volume. Use ? ? 3.14. Round to the nearest tenth when necessary.a cube with side 7 m
A. 21 m3 B. 49 m3 C. 98 m3 D. 343 m3
Determine the standard equation of the ellipse described.Foci at (1, 4) and (7, 4); length of major axis is 10 units.
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D. 
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Multiply.(x + 7)(x - 7)
A. x2 - 14x - 49 B. x2 - 14 C. x2 + 14x - 49 D. x2 - 49
Convert to polar coordinates with 
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