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题目： At a certain university recreation center, a member can receive a 30-minute massage, a 60-minute massage, or a 90-minute massage, and is charged $0.50 per minute for each massage. A member receiving a massage is charged the same fixed amount for each additional service, such as nutrition advice or a fitness evaluation. At this center, what is the total charge to a member for a 60-minute massage and 3 additional services?

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题目： If S is the sum of the first n positive integers, what is the value of n ?

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题目： Is x² − y² a positive number?

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题目： Alan and Sue have each been saving one dollar a day and will continue to do so for the next month. If Sue began saving several days before Alan, in how many days from today will Alan have saved one-half as much as Sue?

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题目： What is the value of x ?

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题目： Is x less than y ?

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题目： State X has a sales tax rate of k percent on all purchases and State Y has a sales tax rate of n percent on all purchases. What is the value of k − n ?

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题目： Is −3 ≤ x ≤ 3 ?

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题目： What is the value of x ?

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题目： Three dice, each with faces numbered 1 through 6, were tossed onto a game board. If one of the dice turned up 4, what was the sum of the numbers that turned up on all three dice?

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题目： Of the numbers q, r, s, and t, which is greatest?

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题目：

CAR RENTAL CHARGES AT THRIFTY AGENCY
Car Type	Charge per day	Charge per Week (7 days)
Economy	$28	$100
Compact	$30	$120
Midsize	$32	$140
Standard	$34	$160
Luxury	$39	$200

The table above shows the car rental charges at Thrifty Agency. The daily rate applies for each day or fraction of a day in excess of any multiple of a 7-day week, up to the charge per week. If Olga rented a car of one of the types indicated, which type was it?

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题目：  Is xy < 6 ?

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题目：  What is the value of ?

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题目：  In a certain group of people, the average (arithmetic mean) weight of the males is 180 pounds and of the females, 120 pounds. What is the average weight of the people in the group?