Solve the problem.The cost C, in dollars, of having a dinner party catered by Elaine's Kosher Catering Company can be approximated by the function 
where n is the number of people attending the party. The banquet hall where the dinner will be located can hold no more than 150 people. Find the domain of the function.
A. [7, 55]
B. (-?, 150]
C. [0, 150]
D. (-?, ?)
Answer: C
Mathematics
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Solve the initial value problem.v'(t) + 
= 9, v(-1) = 0
A. v = -45(et/5 + 1/5 + 45)
B. v = -45e-t/5 - 1/5 + e1/5
C. v = 
e-t/5 - 1/5 + 
D. v = -45(e-t/5 - 1/5 - 1)
Mathematics
Find the difference. Simplify the result.
- 
A. 
B. 
C. 
D. 
Mathematics
Solve the equation. Express irrational solutions in exact form and as a decimal rounded to three places.log (x - 9) + log (x + 9) = 2
A. {
} ? {4.359}
B. {50}
C. {
} ? {13.454}
D. {19, 1}
Mathematics
Classify the real number as a natural number, whole number, integer, rational number and/or irrational number. The number may belong to more than one set.5.
A. irrational number B. rational number C. whole number D. integer, rational number
Mathematics