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According to a theory, the gravitational force F between two metal spheres with masses $$m_{1}$$ and $$m_{2}$$, is given by the formula shown, where $$d$$ is the distance between the centers of the spheres and G is a positive constant. Which of the following changes to the distance or the masses, while keeping the other quantities unchanged, would cause the greatest increase in F?
The cost of producing 1 unit of a product at a certain manufacturing company is $0.75. According to a sales model, if each unit has a selling price of $1.00, the company expects to sell 1,000 units each month. For each $0.05 increase in the unit selling price, the company expects to see a decrease of 100 units sold each month. According to the model, which of the following could be a unit selling price at which the company would expect a profit of at least $250.00 each month? (Profit equals revenue minus cost.)

Indicate all such unit selling prices.
In a large gym class, the teacher plans to group the students into teams for either volleyball or baseball. The volleyball teams would consist of 6 players each, while the baseball teams would consist of 9 players each. If the teacher attempts to group the students into volleyball teams, then there will be 2 students remaining who are not on a team. If the teacher instead attempts to group the students into baseball teams, which of the following could be the number of students remaining who are not on a team?
What is the units digit of the product $$(11^{10})(12^5)(13^3)(15)$$?


AC=AB

Quantity A

$$x+y$$

Quantity B

120


$$p$$ and $$q$$ are real numbers.

$$\frac{p}{q}=\frac{11}{12}$$

Quantity A

$$p$$

Quantity B

$$q$$


$325, $418, $722, $818, $955, $1,092

The six amounts listed are the reported commissions eamed by 6 salespeople during April. Two of the reported amounts are in error; one is $120 greater than the actual amount and one is $120 less.

Quantity A

The standard deviation of the six reported commissions

Quantity B

The standard deviation of the six actual commissions


$$r$$ is a positive integer.

Quantity A

The remainder when the product $$(r+1)(r+2)(r+3)$$ is divided by $$5$$

Quantity B

$$1$$


Michael, Kim, Glenda, and Ian all own DVDs, and no DVD is owned by two or more of them. Michael owns $$\frac{1}{2}$$ of the number of DVDs that Kim owns. Glenda owns $$\frac{1}{3}$$ of the number of DVDs that Ian owns. If Kim and Ian own the same number of DVDs, what is the ratio of the total number of DVDs that Michael and Glenda own to the total number of DVDs that Kim and lan own?

Give your answer as a fraction.
If $$m$$ and $$n$$ are positive integers and $$4m+7n=39$$, how many values of m are possible?
$$n$$ is a positive integer and $$k=10,000n$$.

Quantity A

The sum of the digits of $$n$$

Quantity B

The sum of the digits of $$k$$


One student is to be selected at random from a class. The probability that the student selected will be male is equal to the probability that the student selected will be an English major. The probability that the student selected will be both male and an English major is 0.35. The probability that the student selected will be neither male nor an English major is 0.15. What is the probability that the student selected will be an English major?
Approximately what was the total dollar amount of imports from the United States and Japan?
For how many of the five countries named in the graphs was the dollar amount of imports greater than $45 billion?
Based on the information given, which of the following statements must be true about South Korea's exports and imports, in dollars, in 2009? Indicate all such statements.
The tape recorder is to blame for the (i) _____________ of the interview and has thus had a (ii)_____________ effect on journalism. The possibility of verbatim reproduction has fostered the illusion that the voice of truth is that of the interviewee rather than the more critically detached voice belonging to the journalist, Maybe journalists should return to the lowly notebook, which allows them to (iii)_____________ while listening, relegating the tape recorder to its real role of invaluable witness.

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