Simplify. + 

A.  
B.
C.  
D.  


Answer: A

Mathematics

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Find the gradient ?f.f(x, y) = xy8 - x6

A. 8xy7i + (y8 - 6x5)j B. (y8 - 6x5)i + 8y7j C. (xy8 - 6x5)i + 8xy7j D. (y8 - 6x5)i + 8xy7j

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Solve for y or k, as appropriate.ln (y - 1) - ln 4 = x + ln x

A. 4xex + 1 B. (x + 4)ex + 1 C. 2x + 5 D. ex + 4x + 1

Mathematics

Using the Rule of 78, find the amount of unearned interest for the loan paid in full before the date of maturity. Round to the nearest cent.Finance charge: $6,761Total number of payments: 48Remaining number of payments, when paid in full: 11

A. $395.59 B. $379.44 C. $316.20 D. $329.66

Mathematics

Simplify the rational expression. If the rational expression cannot be simplified, so state.

A.
B.
C.
D.

Mathematics