Solve the problem.Suppose a car rental company charges $72 for the first day and $22 for each additional or partial day. Let S(x) represent the cost of renting a car for x days. Find the value of S(5.5).
A. $182
B. $193
C. $171
D. $121
Answer: A
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Determine whether the given function satisfies Laplace's equation.f(x, y) = e-3y sin -3x
A. Yes B. No
Solve the problem.The value (in thousands of dollars) of a certain car is given by the function V = 
, where t is measured in years. Find a general expression for the instantaneous rate of change of V with respect to t.
A. 
B. - 
C. - 
D. - 
Solve the problem.Persons taking a 30-hour review course to prepare for a standardized exam average a score of 620 on that exam. Persons taking a 70-hour review course average a score of 785. Find a linear function, S(t), which fits this data, and which expresses score as a function of time. Use this function to predict an average score for persons taking a 56-hour review course. Round your answer to the tenths place.
A. 720.0 B. 741.3 C. 731.5 D. 727.3
The management of ThermoMaster Company, whose Mexican subsidiary manufactures an indoor-outdoor thermometer, has estimated that the total weekly cost (in dollars) for producing x thermometers is 
dollars/year.
?
Find the average cost function C.
?
A. 
B. 
C. ?
D. 