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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