Equations, Inequalities, Expressions

• A
• B
• C
• D

Which represents all the values for x that make the following true:
-3x > 21

• x < -7

• x < 63

• x > -7

• x > -63

• -3

• 3

• -24

• 24

Choose the equivalent expression.

15 + 4(5y + 10)

• 5y + 25

• 20y - 25

• 20y + 40

• 20y + 55

The cost to rent a rug cleaner for a day is $25 plus $15 per hour.

Write an inequality that can be used to show how many hours (x) you can rent the rug cleaner for so that the charges will be less than $130.

Mathematical Equivalence

OFF

Match the following

• Double shaded region

• Equation

• no equal sign or inequality symbol

• System of Equations

• Has an equal sign

• inequality

• more than one line

• System of Inequalties

• has an inequaltiy symbol

• Expression

Which of the following is NOT equivalent to 42x + 24?

• 2(21x + 12)

• 3(14x + 8)

• 6(7x + 4)

• 7(6x + 17)

5 less than the product of 7 and s

• 7s - 5

• 5 - 7 + s

• 7(s - 5) 

• 5 - 7s

Choose the vocabulary term that best describes the algebraic form:
-3x < 24

• Equation

• Inequality

• Variable Expression

• Numerical Expression

4x = 16

• Expression

• Equation

• Inequality