Math in Focus Chapter 8 Equations and Inequalities

Dividing by four is the __________ of multiplying by four.

• Inverse operation
• Inequality
• equation
•  expression

The statement x > 8 is an example of an _________.

• inverse operation
• inequality
• expression
• equation

Solve the equation, and check the solution.
4 + x = 12

• x = 16
• x = 2
• x = 8
• x = 48

Solve the equation, and check the solution.
f - 2.3 = 18.4

• f = 16.1
• f = 8
• f = 20.7
• f = 42.32

Solve the equation, and check the solution.
0.8m = 32

• m = 40
• m = 31.2
• m = 25.6
• m = 32.8

Solve the equation, and check the solution.
15 + y = 26

• y = 41
• y = 1.73
• y = 390
• y = 11

Solve the equation, and check the solution.
⅖ t = 12

• t = 4.8
• t = 30
• t = 12⅖
• t = 11⅗

Solve the equation, and check the solution.
k ÷ 7 = 14 

• k = 2
• 98
• 7 
• 21

Determine whether the given variable is a solution of the equation.
c + 32 = 67; c = 25

• yes
• no

Determine whether the given variable is a solution of the equation.
3.5n = 7.35; n = 2.1

• yes
• no