Lineárne rovnice

Evaluate the following expression when x = 4:

x² + 2x + 3

• 17

• 27

• 19

• 25

a² - b²
Evaluate if a=4 and b =2

• 4
• 20
• -4
• 12

Evaluate if a = 2 and b = 8
6 + 7b - 3a

• -100
• 100
• -56
• 56

Sunny earns $12, per hour delivering cakes. She worked for x hours this week. Unfortunately, she was charged $15 for a late delivery on Tuesday. How much money did Sunny earn this week?
Write your answer as an expression.

• 12 - x + 15
• 15 - x - 12
• 12x - 15 
• 15x + 12

Julie saved up $265 then bought a sweater for d dollars.
Write your answer as an expression.

• 265 - d
• d - 265
• 265 - s
• s - 265

The sum of 6 and x multiplied by 4 is represented by:

• 4(x + 6)
• 6x + 4
• x +4
• 4x + 4

x+28=50

• 12

• 22

• 32

• 78

x.15=30

• 2

• 3

• 450

• 15

x:5=6

• 30

• 25

• 5

• 35

Dosaď číslo za w, aby platila rovnost. w x 6 x 6 = (300 : 5) x 8 - 264

• 5

• 7

• 6

• 4