Find principal to the nearest dollar, rate to the nearest tenth of a percent, or time to the nearest day. Use banker's interest.ABF Freight Systems earned 
interest in 210 days from an investment that paid 4%. Find the amount initially invested.
A. $10,500
B. $18,000
C. $9,000
D. $182,500
Answer: B
Mathematics
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Determine all real values of the variable for which the function has the value indicated.h(a) = 5a2 + 8a + 1
A. 
B. 
C. 
D. no real numbers
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Graph the inequality.x ? -4.9 or x > -2.9
A. 
B. 
C. 
D. 
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Solve the problem.If v = 3i - 5j and w = -7i + 4j, find 3v - 4w.
A. -4i - j B. 17i - 10j C. -19i + j D. 37i - 31j
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Determine whether or not the function is one-to-one.f(x) = x2 + 7
A. No B. Yes
Mathematics