Perform the indicated operation. Write the answer in scientific notation.
A. 2.3 × 1013
B. 4.6 × 10-3
C. 2.3 × 10-3
D. 4.6 × 1013
Answer: A
Mathematics
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Find the work done by F over the curve in the direction of increasing t.F = ti + 
j + k ; C: r(t) = e2ti + e2tj + (2t2 + t)k, -1 ? t ? 1
A. W = 6 B. W = 2 C. W = e2 + e-2 + 2 D. W = e2 + e-2 + 6
Mathematics
Suppose that ln 2 = a and ln 5 = b. Use properties of logarithms to write each logarithm in terms of a and b.ln 
A. 
B. 
C. b - a
D. a + b
Mathematics
Use the leading coefficient test to determine whether y?? or y?-? as
y = -3x6 + 5x5 - x2 - 7x + 6
A. -? B. ?
Mathematics
Use a graphing utility to find or approximate solutions to the equation. If necessary, round your answers to three decimal places.x2 - 6x - 57 = 0
A. 31.605, -25.605 B. 25.605, -31.605 C. 11.124, -5.124 D. 5.124, -11.124
Mathematics