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Algebraic Expressions
Algebraic Expressions
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Algebraic Expressions: Don't Circumvent Circumferences True or False

1. Which of the following is NOT an appropriate way to abbreviate "z times 7"? -> z7 
2. The circumference of a circle is given by the formula C = 2 π r. Which of the following is/are the variable(s) in this formula? -> C, r
3. The circumference of a circle is given by the formula C = 2 π r. Which of the following is/are the constant(s) in this formula? -> π, r
4. The circumference of a circle is given by the formula C = 2 π r. Which is/are the independent variable(s) in this formula? -> None of the above
5. Which of the following are the terms in the expression ax2 + bx - c? -> ax2, bx2, and c
6. A formula is a particular type of -> expression
7. Evaluate the expression 3 + x - x2 - x3 for x = ( - 3). -> 36
8. Evaluate the expression 25 - xy + x - y3 for x = 3 and y = - 2. -> 42
9. The area of a trapezoid is given by the formula , where A is the altitude of the trapezoid—so be sure to bring your inhaler if you plan on climbing to the top of it—and b1 and b2 are the bases of the trapezoid. What is the area of the trapezoid shown below?

  -> 24
10. Annie wants to donate 5% of her income to charity. Well, she doesn't especially want to, but she has heard that she will receive a nice tax break if she does. Let I be Annie's income, and let C be the amount Annie donates to charity. Which of the following formulas best expresses the relationship between I and C? -> C = 0.05I
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