题库 | 考满分，百万出国党的口碑之选。

序号	题目内容
161	Which of the following must be equal to $${x}^{6}{x}^{4}$$ ?
162	If n and y are positive integers and 450y = $${n}^{3}$$, which of the following must be an integer?I.$$\frac{y}{{3}{2}^{2}{5}}$$II.$$\frac{y}{{3}^{2}{2}{5}}$$III.$$\frac{y}{{3}{2}{5}^{2}}$$
163	In 1990 the budgets for projects Q and V were $660,000 and $780,000, respectively. In each of the next 10 years, the budget for Q was increased by $30,000 and the budget for V was decreased by $10,000. In which year was the budget for Q equal to the budget for V ?
164	A certain scholarship committee awarded scholarships in the amounts of $1,250,$2,500, and $4,000. The committee awarded twice as many $2,500 scholarships as $4,000 scholarships, and it awarded three times as many $1,250 scholarships as $2,500 scholarships. If a total of $37,500 was awarded in $1,250 scholarships, how many $4,000 scholarships were awarded?
165	If x >$${y}^{2}$$ >$${z}^{4}$$, which of the following statements could be true?I. $$x >{y}>{z}$$II. $$z >{y}>{x}$$III.$$x>{z}>{y}$$
166	The architects of a certain type of building estimate construction costs to be $2.0 million per floor for each of the first 5 floors, $2.5 million per floor for each of the next 3 floors, and $3.5 million per floor for any additional floors. What would the architects estimate the construction costs to be for a building of this type with 10 floors?
167	If x is positive, which of the following could be the correct ordering of $$\frac1 x$$, 2x, and $${x}^{2}$$I. $${x}^{2}<2x<\frac1 x$$II. $$x^2<\frac1 x<2x$$III.$$2x<{x^2}<\frac1 x$$
168	For which of the following functions f is f（x） = f（1-x） for all x?
169	The total price of a basic computer and a printer was $2,500. If the same printer had been purchased with an enhanced computer whose price was $500 more than the price of the basic computer, then the price of the printer would have been $$\frac{1}{5}$$of that total.What was the price of the basic computer?
170	Of the 13 employees in a certain department, 1 has an annual salary of $38,000, 2 have an annual salary of $45,000 each, 2 have an annual salary of $42,500 each, 3 have an annual salary of $40,000 each, and 5 have an annual salary of $48,500 each. What is the median annual salary for the 13 employees?
171	Julia purchased a car on an installment plan. She made a down payment of $2,550 and then made n monthly payments of $155 each. If Julia paid a total of $9,060 for the car,how many monthly payments did she make?
172	A metal company's old machine makes bolts at a constant rate of 100 bolts per hour.The company's new machine makes bolts at a constant rate of 150 bolts per hour. If both machines start at the same time and continue making bolts simultaneously, how many minutes will it take the two machines to make a total of 300 bolts?
173	In a certain state, gasoline stations compute the price per gallon p, in dollars, charged at the pump by adding a 4 percent sales tax to the dealer's price per gallon d, in dollars, and then adding a gasoline tax of $0.18 per gallon. Which of the following gives the dealer's price per gallon d in terms of the price per gallon p charged at the pump?
174	The main ingredient in a certain prescription drug capsule costs $500.00 per kilogram. If each capsule contains 600 milligrams of the ingredient, what is the cost of the ingredient in a capsule? (1 kilogram = $${10}^{6}$$ milligrams)
175	Before being simplified, the instructions for computing income tax in Contry R were to add 2 percent of one's annual income to the average (arithmetic mean) of 100 unit of Contry R's currency and 1 percent of one's annual income. Which of the following represents the simplified formula for computing the income tax, in Country R's currency, for a person in that whose annual income is I?
176	If the operation * is defined for all integers a and b by ab=a+b-ab which of the following statements must be true for all integers a, b, and c ?I. ab=baII. a0=aIII. (ab)c=a(bc)
177	When a certain tree was first planted, it was 4 feet tall, and the height of the tree increased by a constant amount each year for the next 6 years. At the end of the 6th year,the tree was 1/5 taller than it was at the end of the 4th year. By how many feet did the height of the tree increase each year?
178	Adam and Beth each drove from Smallville to Crown City by different routes. Adam drove an an average speed of 40 miles per hour and completed the trip in 30 minutes.Beth's route was 5 miles longer, and it took her 20 minutes more than Adam to complete the trip. How many miles per hour was Beth's average speed on this trip?
179	If two sides of a triangle have lengths 2 and 5, which of the following could be the perimeter of the triangle?I. 9II. 15III. 19
180	List K consists of 12 consecutive integers. If -4 is the least integer in list K, what is the range of the positive integers in list K ?

序号

题目内容

161

Which of the following must be equal to $${x}^{6}{x}^{4}$$ ?

162

If n and y are positive integers and 450y = $${n}^{3}$$, which of the following must be an integer?I.$$\frac{y}{{3}*{2}^{2}*{5}}$$II.$$\frac{y}{{3}^{2}*{2}*{5}}$$III.$$\frac{y}{{3}*{2}*{5}^{2}}$$

163

In 1990 the budgets for projects Q and V were $660,000 and $780,000, respectively. In each of the next 10 years, the budget for Q was increased by $30,000 and the budget for V was decreased by $10,000. In which year was the budget for Q equal to the budget for V ?

164

A certain scholarship committee awarded scholarships in the amounts of $1,250,$2,500, and $4,000. The committee awarded twice as many $2,500 scholarships as $4,000 scholarships, and it awarded three times as many $1,250 scholarships as $2,500 scholarships. If a total of $37,500 was awarded in $1,250 scholarships, how many $4,000 scholarships were awarded?

165

If x >$${y}^{2}$$ >$${z}^{4}$$, which of the following statements could be true?I. $$x >{y}>{z}$$II. $$z >{y}>{x}$$III.$$x>{z}>{y}$$