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题目： The toll T, in dollars, for a truck using a certain bridge is given by the formula $$ T = 1.50 + 0.50(x - 2)$$ , where x is the number of axles on the truck. What is the toll for an 18-wheel truck that has 2 wheels on its front axle and 4 wheels on each of its other axles?

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题目： If $$ x =-\frac{5}{8}$$and $$ y =-\frac{1}{2}$$ , what is the value of the expression $$ -2x - y^{2}$$ ?

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题目： For positive integers a and b, the remainder when a is divided by b is equal to the remainder when b is divided by a. Which of the following could be a value of ab? I. 24 II. 30 Ill. 36

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题目： List S consists of the positive integers that are multiples of 9 and are less than 100. What is the median of the integers in S ?

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题目： In the figure above, if F is a point on the line that bisects angle ACD and the meaure of angle DCF is $$x^{0}$$ , which of the following is true of x?

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题目： A rope 20.6 meters long is cut into two pieces. If the length of one piece of rope is 2.8 meters shorter than the length of the other, what is the length, in meters, of the longer piece of rope?

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题目： If x and y are integers and $$x - y$$ is odd, which of the following must be true? I. xy is even. II. $$x^{2}+y^{2}$$ is odd. Ill. $$(x+y)^{2}$$ is even.

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题目： On Monday, the opening price of a certain stock was $100 per share and its closing price was $110 per share. On Tuesday the closing price of the stock was 10 percent less than its closing price on Monday, and on Wednesday the closing price of the stock was 4 percent greater than its closing price on Tuesday. What was the approximate percent change in the price of the stock from its opening price on Monday to its closing price on Wednesday?

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题目： In the rectangular coordinate system shown above, points 0, P, and Q represent the sites of three proposed housing developments. If a fire station can be built at any point in the coordinate system, at which point would it be equidistant from all three developments?

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题目： What is the perimeter, in meters, of a rectangular garden 6 meters wide that has the same area as a rectangular playground 16 meters long and 12 meters wide?

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题目： 1 - 0.000001 =

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题目： $$left| -4 right| (left| -20 right| - left| 5 right|)$$ =

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题目： Of the total amount that Jill spent on a shopping trip, excluding taxes, she spent 50 percent on clothing, 20 percent on food, and 30 percent on other items. If Jill paid a 4 percent tax on the clothing, no tax on the food, and an 8 percent tax on all other items, then the total tax that she paid was what percent of the total amount that she spent, excluding taxes?

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题目： At the opening of a trading day at a certain stock exchange, the price per share of stock K was $8. If the price per share of stock K was $9 at the closing of the day, what was the percent increase in the price per share of stock K for that day?

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题目： As shown in the diagram above, a lever resting on a fulcrum has weights of $$w_{1}$$ pounds and $$w_{2}$$ pounds, located $$d_{1}$$ feet and $$d_{2}$$ feet from the fulcrum. The lever is balanced and $$w_{1}$$ $$d_{1}$$ = $$w_{2}$$ $$d_{2}$$• Suppose $$w_{1}$$ is 50 pounds and $$w_{2}$$ is 30 pounds. If $$d_{1}$$ is 4 feet less than $$d_{2}$$, what is $$d_{2}$$, in feet?