Identify the parts of each expression. Choose from these labels: variable, constant, and coefficient.t + 12
A. t is a variable; 12 is a variable.
B. t is a constant; 12 is a constant.
C. t is a variable; 12 is a constant.
D. t is a constant; 12 is a variable.
Answer: C
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Solve the problem.A cylinder with height 10 m and radius 4 m is filled with water and must be emptied through an outlet pipe 2 m above the top of the cylinder. Compute the work required to empty the water in the top half of the tank. Then compute the work required to empty the (equal amount of) water in the lower half of the tank. Round to two decimal places when appropriate.
A. 11,083,538.9 J; 23,398,582.1 J B. 12,315,043.2 J; 12,315,043.2 J C. 34,482,120.9 J; 23,398,582.1 J D. 24,630,086.4 J; 12,315,043.2 J
A division of Ditton Industries manufactures the Futura model microwave oven. The daily cost (in dollars) of producing these microwave ovens is 
, where x stands for the number of units produced.
?
Round the answers to the nearest cent.
?
What is the actual cost incurred in manufacturing the 101st oven?
?
$__________
?
What is the actual cost incurred in manufacturing the 201st oven?
?
$__________
?
What is the actual cost incurred in manufacturing the 301st oven?
?
$__________
?
What is the marginal cost when 
?
?
$__________
?
What is the marginal cost when 
?
?
$__________
?
What is the marginal cost when 
?
?
$__________
What will be an ideal response?
Decide whether the pair of lines is parallel, perpendicular, or neither.2x + 3y = 9 and 2y = 3x - 8
A. Parallel B. Perpendicular C. Neither
Determine which of the rational functions given below has the following feature(s).The horizontal asymptote is y = 5
A. f(x) = 
B. f(x) = 
C. f(x) = 
D. f(x) = 