The function given below gives the cost to manufacture 
items. Estimate (using 
) the instantaneous rate of change of the cost at the production level
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?
?
Select your answer rounded to the nearest tenth.
?
A. 3.8
B. 5.0
C. 4.0
D. 2.8
E. 4.8
Answer: A
Mathematics
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?
?
Select your answer rounded to the nearest tenth.
?
A. 3.8
B. 5.0
C. 4.0
D. 2.8
E. 4.8
Answer: A
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Solve the problem.A flagpole is perpendicular to the horizontal but is on a slope that rises 10° from the horizontal. The pole casts a 43-foot shadow down the slope and angle of elevation of the sun measured from the slope is 36°. How tall is the pole? Round your answer to the nearest 0.1 foot.
A. 36.2 ft B. 35.4 ft C. 36.4 ft D. 33.5 ft
Solve.
x = - 
A. 
B. - 
C. - 
D. - 
Multiply.
? 
A. - 
B. 
C. - 
D. 
Determine whether the matrix is in echelon form, reduced echelon form, or neither.
A. Echelon form B. Reduced echelon form C. Neither