Solve the problem.A woman invested $7,000 at 6% (or 0.06) for 7 years. How much did she have in her account at the end of 7 years? 
A. $9,940
B. $2,940
C. $5,880
D. $294
Answer: A
Mathematics
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Use a calculator to perform the operation. Express your answer in scientific notation.
A. 1.39 × 10-3 B. 1.39 × 10-11 C. 1.39 × 10-1 D. 1.388728918 × 10-11
Mathematics
Is the ordered triple a solution to the given system of equations?(-2, -1, 5) x - y + z = 4 2x - 8y - 3z = 24 3x + 4y + 2z = 7.
A. No B. Yes
Mathematics
Translate the phrase to an algebraic expression. Use x to represent "a number."Find the sum of 48 and a number.
A. 48 + (-x) B. x - 48 C. 48 + x D. 48 - x
Mathematics
Simplify the algebraic expression.-6x9 - 11x9
A. -18x9 B. -17x18 C. -17x81 D. -17x9
Mathematics