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If $$a$$ and $$b$$ are integers satisfying the equation $$a^{2}+b^{2}=145$$, which of the following could be the value of $$a+b$$?

Indicate all such values.
The degree measure of each angle of a regular polygon with $$n$$ sides is between $$100$$ and $$130$$. Which of the following could be the value of $$n$$?

Indicate all such integers.
If the sum of the degree measures of the interior angles of regular polygon P is 360 degrees more than that of regular polygon Q, then P has how many more sides than Q?
$$\frac{x}{y}- \frac{w}{z}=2$$

Quantity A

The time it took car G to travel $$x$$ miles at the average rate of $$y$$ miles per hour

Quantity B

The time it took car H to travel $$w$$ miles at the average rate of $$z$$ miles per hour


The ratio of the number of males to the number of females in a mathematics class is 4 to 5. The corresponding ratio in an English class is 5 to 4. There are 50 percent more males in the English class than there are in the mathematics class. What is the ratio of the number of females in the mathematics class to the number of females in the English class?
How many integer values of n satisfy the inequality | 3-n | ≤ 4 ?
How many integers from 1 to 2,000, inclusive, are both the square of an integer and the cube of an integer?
In the xy-plane, a line with equation $$y=mx+b$$, where $$m$$ and $$b$$ are constants and $$mb \neq 0$$, has a $$y$$-intercept that is twice the $$x$$-intercept.

Quantity A

$$m$$

Quantity B

$$-2$$


All of the 80 science students at a certain school are enrolled in at least one of three science courses: biology, chemistry, and physics. There are 60 students enrolled in biology, 50 students enrolled in chemistry, and 35 students enrolled in physics. None of the students are enrolled in all three courses. Which of the following could be the number of students enrolled in both chemistry and physics?
Indicate all such numbers.

The figure above shows a rectangle and five circles. Each circle is tangent to the other circles and to the sides of the rectangle that it touches. If the diameter of each circle is 4, what is the area of the rectangle?
Let $$\frac{1}{3}$$+$$\frac{1}{5}$$+$$\frac{1}{7}$$+$$\frac{1}{9}$$+$$\frac{1}{11}$$=$$\frac{m}{(3)(5)(7)(9)(11)}$$, where m is a positive integer. What is the remainder when m is divided by 5?
Let $$x$$ and $$y$$ be numbers such that $$xy \lt 0$$.

Quantity A

$$||x| – |y||$$

Quantity B

$$|x – y|$$


On May 5, 2004, the closing price of Stock A was $60.00, which was a decrease of 8 percent from the closing price of the stock on the previous day, May 4, 2004. On May 6, 2004, the closing price of the stock was exactly the same as the closing price on May 4, 2004. What was the percent increase in the closing price of the stock from May 5, 2004 to May 6, 2004?

Give your answer to the nearest whole percent.
The total revenue that firm P receives from the sale of a particular item is determined by multiplying the number of the items it sells by the price of the item. If the price of the item is to be decreased by 20 percent, by what percent must the number of the items sold increase to keep the total revenue unchanged?
One day in 1997 at a gas station in the United States near the border of Canada, gasoline was selling for $1.20 per gallon (United States dollars). On that day, 1 United States dollar could be exchanged for 1.25 Canadian dollars. If gasoline was being sold at an equivalent rate at a gas station across the border in Canada, which of the following calculations gives an approximate price, in Canadian dollars, for a liter of gasoline at the Canadian gas station that day? (1 gallon is approximately 3.785 liters.)
$$(3.8 \times 6^{25}) — (0.24 \times 6^{26})$$ =
The function $$f$$ is defined by f$$(x)=2^{-x^{2}}$$ for all integers $$x$$. Which of the following could be the value of $$f(x)$$?

Indicate all such values.
The function $$f$$ is defined for all integers $$n$$ greater than 2 by $$f(n)=(1)(2)(3)...(n-2)$$. That is, $$f(n)$$ is the product of the first $$n-2$$ positive integers. What is the value of $$\frac{f(9)}{f(8)}$$?
The operation  is defined by r s=12 $$r^{-1}$$(s+3) for all positive numbers r and s. If x 3=18, what is the value of x?
A box manufacturer is designing a closed box in the shape of a rectangular solid. The ratio of the lengths of the sides of the box is 1 to 2 to 3. The total surface area of the box is 550 square inches. What is the volume of the box, in cubic inches?

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