Find the sum without the use of a number line.-84 + 27
A. -111
B. 111
C. 57
D. -57
Answer: D
Mathematics
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Use logarithmic differentiation to find the derivative of y.y = 
A. 
B. ln x + 
ln(x5 + 9) - 
ln(x + 7)
C. 
+ 
- 
D. 
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Graph the function.f(x) = log4(x) + 1
A. 
B. 
C. 
D. 
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Change the given quantity to the indicated unit.31,680 ft = 
mi
A. 7 B. 6 C. 158.4 D. 6.5
Mathematics
Simplify the expression. Assume all variables represent positive real numbers.
A. -4k4 B. 4k4 C. 64k4 D. 4k15
Mathematics