# Grade 9 Math: Rational Numbers, Exponents, and Polynomials Introduction to Variables

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### The following statement is true or false? "A Variable is a letter (usually a lowercase english letter) that represents an unknown number-value."

True
False
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### What is the value of $$x$$ for this question: $$12x+3=33$$

2
2.5
4
1.5
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### A school basketball team won \$1000 from their last tournament. The winnings were split evenly among $$x$$ players. Let $$y$$ represent the total amount of dollars that each individual player gets. Find an expression that describes each player’s individual winnings.

$$y = \frac{x}{1000}$$
$$y = {1000}{x}$$
$$y = \frac{1000}{x}$$
$$y = {1000}+{x}$$
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### What is the value of $$x$$ for this question: $$3x-3=4$$

1
2
3
4
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### George and Dave are selling pies for charity. Dave sold $$d$$ pies and George sold 48 pies. Together they sold a total of 84 pies. Find the equation that best fits this situation.

$$84=48+d$$
$$48=84+d$$
$$48=d+84$$
none of the above
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