In the proportion 
, the number b is known as the geometric mean for a and c.
Answer the following statement true (T) or false (F)
True
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Simplify.(x - x2 + 5) + (3 - 5x2 + x3)
A. x3 - 6x2 + x + 8 B. x3 + 6x2 + x + 8 C. x3 - 6x2 + 8x D. x3 - 4x2 + x - 8
Write the percent as a fraction or a mixed number in simplest form.81.25%
A. 81
B. 
C. 
D. 81
Lorimar Watch Company manufactures travel clocks. The daily marginal cost function associated with producing these clocks is
?
?
where 
is measured in dollars/unit and x denotes the number of units produced. Management has determined that the daily fixed cost incurred in producing these clocks is $130. Find the total cost incurred by Lorimar in producing the first 600 travel clocks/day.
?
A. $2,182
B. $1,970
C. $2,313
D. $2,254
The lengths of the edges of a cube are increasing at a rate of 9 ft/min. At what rate is the surface area changing when the edges are 16 ft long? ?
A. 972 ft2/min B. 1,728 ft2/min C. 3,072 ft2/min D. 486 ft2/min E. 7,776 ft2/min