Solve. J. Hartley poolbuilders charges $15,600 to build a residential swimming pool. Their costs are $1568 for excavation and steel reinforcement; $1555 for concrete and plaster; $2850 for tile and coping; $1675 for plumbing and electric work; and $2579 for equipment. What is their profit?
Fill in the blank(s) with the appropriate word(s).
$5373
Mathematics
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Convert the angle to decimal degrees and round to the nearest hundredth of a degree.108°26'4''
A. 108.44° B. 108.43° C. 108.39° D. 108.49°
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Find the largest open intervals where the function is concave upward.f(x) = 
(exact values)
A. (-?, -1), (-1, ?)
B. None
C. (-?, -1)
D. (
, ?)
Mathematics
Determine whether the matrix is in row-echelon form. If it is, then determine also whether it is in reduced row-echelon form.
A. Yes; yes B. Yes; no C. No
Mathematics
Graph the rational function.f(x) = 
A. 
B. 
C. 
D. 
Mathematics