Topic 4: Equations and Inequalities

Solve the equation:
5x = 25

• x = 20
• x = 125
• x = 4
• x = 5

Mary has a gift card to buy a new Iphone. She says the card’s value is not enough to buy any of the Iphones shown. Let v be the value of the gift card. Which inequality best describes the value of the gift card?

• v < 599

• v > 599

• v > 399

• v < 399

• 4

• -4

• 16

• 1.6

• 20

• 36

• 9

• 16

 When you graph an inequality, you use a closed dot when you use which symbols?

• ≤, ≥ 

• <, >

 $5\ \frac{3}{5}=m+\frac{7}{10}$  Find the value of x.

•  $4\ \frac{1}{3}$  

•  $5\ \frac{3}{4}$  

•  $3\ \frac{1}{4}$  

•  $4\ \frac{9}{10}$  

• -11

• -13

• 13

• 11

To undo an operation, you must do its opposite or inverse to both sides of the equation. Match each operation to its inverse.

• Multiplication

• Division

• Division

• Multiplication

• Subtraction

• Addition

• Addition

• Subtraction

Solve the inequality.

x + 5 ≤ 13

• x ≥ 8

• x ≤ 8 

• x ≥ 18

• x ≤ 18 

• 4

• -21

• 10

• 21