Year 9 Algebra Check in

The cost of apples is 23 kr/kg and the cost of bananas is 18 kr/kg. Which expression represents the amount of money Jenny will pay for x kg of apples and y kg of bananas.

• 23x+18y

• 23y-18x

• (23y)(18x)

• 23y-18x

Which expression represents the following: Sally is 4 less than two times as old as Henry. Let x be Henry's age.

• 2x+4

• 2x-4

• 4-2x

• 4+2x

Evaluate the expression 3x+2 if x=4

Evaluate the expression x²-3 if x=7

Simplify the expression: 4-(x+2)

• -x+6

• x+2

• -x+2

• x+6

What is the simplified form of

x + 3 - 2x + 7 - 6

• -x+4

• 3x+4

• x+4

• 3x-6

What is the expression for the pattern seen in the picture?

• 8n+2

• 2n+1

• 4n+4

• 4n-4

What is the expression for the pattern seen in the picture?

• 2n+4

• 4n+2

• 3n-2

• 2n+2

Simplify 3(x-3)

• 3x - 9

• 3x + 9

• 3x² - 3

• 3x - 3

Solve the equation x+2x+3=15. Type the number below.