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Return to Unit 26 Algebraic Expressions and Equations     Part 4 Exponents
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Evaluate the following expressions for x = 2, y = 4, and z = 3.

1) 3x + 4

2) x² + z² 3) 4y - x² 4) 3x + 2y - 4

5) 4xy - z

6)

Solve these equations and ckeck your answer.

7) y - 4 = 3

8) y + 5 = 15 9) 3y = 24 10)

11) Mark's dad is four times as old as Mark. His dad is 28. Find Mark's age using an equation.

12) Write an expression for seven decreased by 2 times a number.

Quick Notes stars problems 11 and 12. Students have been told that starred problems are very difficult.
Students are encouraged not to worry if they can't do these problems because
there are very few problems of this level on standardized basic mathematics exams.
.

Evaluate the following expressions for x = 2, y = 4, and z = 3.
1) 3x + 4	2) x² + z²	3) 4y - x²	4) 3x + 2y - 4
5) 4xy - z		6)
Solve these equations and ckeck your answer.
7) y - 4 = 3	8) y + 5 = 15	9) 3y = 24	10)
11) Mark's dad is four times as old as Mark. His dad is 28. Find Mark's age using an equation.		12) Write an expression for seven decreased by 2 times a number.
Quick Notes stars problems 11 and 12. Students have been told that starred problems are very difficult. Students are encouraged not to worry if they can't do these problems because there are very few problems of this level on standardized basic mathematics exams. .