Simplify by removing grouping symbols and combining like terms.-3x - 3(x + 4y)
A. -6x - 12y
B. -4x - 12y
C. -6x + 12y
D. -6x + 4y
Answer: A
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Evaluate the following expression. ? 72· 7 ?
A. 225 B. 347 C. 3375 D. 346 E. 343
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 $1600. The total income from the 5% and 6% investments is equal to the income from the 8% investment. Find the amount invested at each rate.
A. $10,000 at 5%, $10,000 at 6%, $5000 at 8% B. $5000 at 5%, $10,000 at 6%, $10,000 at 8% C. $10,000 at 5%, $5000 at 6%, $10,000 at 8% D. $8000 at 5%, $10,000 at 6%, $7000 at 8%
Write the power of i as i, -1, -i, or 1.i14 + i11
A. 1 + i B. 1 - i C. -1 + i D. -1 - i
Solve the following system by any appropriate method. If there is no real number solution, so state.xy = 84y - 4x = 8
A. (-4, -2), (2, 4) B. (4, 2), (-2, -4) C. (-4, 2), (2, -4) D. no real solution