You are given a mathematical question described with an open-ended vocabulary. Questions in this task involve real-world situations, describing a mathematical problem. You are also given 4 or 5 answer options (associated with "A", "B", "C", "D", "E"). Do not generate anything else apart from one of the following characters: 'A', 'B, 'C', 'D', 'E'. LaTeX mathematical format (the standard way to express mathematical expressions in the typesetting software known as LaTeX) is used to express equations. Each question is solvable with high school math knowledge. Give only one answer for each question.
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Question: While away at school, Eileen receives an allowance of $400 each month, 35 percent of which she uses to pay her bills. If she budgets 30 percent of the remainder for shopping, allots $130 for entertainment, and saves the rest of the money, what percentage of her allowance is she able to save each month?
(A)2.5\% (B)13\% (C)20\% (D)35\% (E)52\%

Answer: B


Question: The number of instances of illness that a person has in one year is inversely proportional to the average (arithmetic mean) number of hours that person sleeps per night. If last year Lori slept an average of 8 hours per night and was ill 3 times, how many times would she have been ill if she had slept an average of 6 hours per night?
(A)2.25 (B)3 (C)3.5 (D)4 (E)4.75

Answer: D


Question: The cost for coal from a certain company is \$15 for the first pound plus \$6 for each additional pound of coal. Which of the following functions gives the total cost, in dollars, for p pounds of coal?
(A)\(C(p) = 6p - 15\) (B)\(C(p) = 6p - 9\) (C)\(C(p) = 6p\) (D)\(C(p) = 6p + 9\) (E)\(C(p) = 6p + 15\)

Answer:
D