Differentiate.
Mathematics
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Use implicit differentiation to find dy/dx and d2y/dx2.2y - x + xy = 2
A. 
= 
; 
= 
B. 
= - 
; 
= 
C. 
= 
; 
= 
D. 
= - 
; 
= 
Mathematics
Use the line graph to answer the question.The line graph shows the 2001 sales data for the Big "D" company. 
Find the increase in sales between month 8 to month 11.
A. $8000 B. $2000 C. $6000 D. $4000
Mathematics
Perform the indicated operation without the use of a calculator and express each answer in decimal notation.
A. 29,400,000,000,000 B. 600,000 C. 29,400,000 D. 600,000,000,000
Mathematics
Find the exact value of the indicated trigonometric function of ?.sin ? = - 
, tan ? > 0Find sec ?.
A. - 
B. 
C. - 
D. - 
Mathematics