Find the value of the expression. Round your result to two decimal places.
?
?
A. 0.28
B. 1.28
C. 1.29
D. -1.29
E. -0.28
Answer: A
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Find the center of mass of a thin plate covering the given region with the given density function.The region between the x-axis and the curve y = 
, 1 ? x ? 2, with density ?(x) = 
A. 
= 
, 
= 1
B. 
= 
, 
= 
C. 
= 
, 
= 
D. 
= 
, 
= 
Solve.A new car sold for $12,345.00 plus 7.5% state sales tax. What was the total amount paid for the car?
Fill in the blank(s) with the appropriate word(s).
Write the equation either in the form (y - k)2 = a(x - h) or (x - h)2 = a(y - k).y2 - 2y - 4x + 13 = 0
A. (y - 1)2 = 4(x + 3) B. (y + 1)2 = -4(x - 3) C. (y + 1)2 = 4(x - 3) D. (y - 1)2 = 4(x - 3)
Solve the problem.For the total-cost functionC(x) = 0.01x2 + 0.8x + 50,find ?C and C'(x) when x = 50 and ?x = 1.
A. ?C = $1.81; C'(50) = $1.80 B. ?C = $1.81; C'(50) = $1.30 C. ?C = $1.00; C'(50) = $1.00 D. ?C = $1.81; C'(50) = $1.00