Let f(x)=3x+8. Which expression represents f^(-1)(x)?

  • (3x) – (8)
  • (x – (8))/3
  • (x + (8))/3
  • 3/(x – (8))
  • (x - (8))/3

Rina has x pencils and buys 4 more. Now she has 17 pencils. Which equation correctly represents the situation?

  • x + 4 = 21
  • x + 4 = 17
  • x – 4 = 17
  • 4x = 17
  • x + 4 = 17

A bus fare is 3 taka per student. For x students, the total fare is 36 taka. Which equation correctly represents the situation?

  • x – 3 = 36
  • 3x = 36
  • x/3 = 36
  • x + 3 = 36
  • 3x = 36

Sam’s age is x. His brother is 7 years older and is 18 years old. Which equation correctly represents the situation?

  • x – 7 = 18
  • x + 7 = 25
  • 7x = 18
  • x + 7 = 18
  • x + 7 = 18

A number x is divided equally among 12 students. Each student gets 10. Which equation correctly represents the situation?

  • x/12 = 10
  • 12x = 10
  • x + 12 = 10
  • x – 12 = 10
  • x/12 = 10

Each packet has 10 stickers. There are x packets and 90 stickers altogether. Which equation correctly represents the situation?

  • x/10 = 90
  • x – 10 = 90
  • x + 10 = 90
  • 10x = 90
  • 10x = 90

A box has x marbles. After giving away 9, -1 marbles remain. Which equation correctly represents the situation?

  • x + 9 = +1
  • x – 9 = -1
  • x/9 = -1
  • 9x = -1
  • x - 9 = -1


Rina has x pencils and buys 6 more. Now she has 13 pencils. Which equation correctly represents the situation?

  • 6x = 13
  • x – 6 = 13
  • x + 6 = 13
  • x + 6 = 19
  • x + 6 = 13

A bus fare is 5 taka per student. For x students, the total fare is 30 taka. Which equation correctly represents the situation?

  • x/5 = 30
  • x – 5 = 30
  • 5x = 30
  • x + 5 = 30
  • 5x = 30

Sam’s age is x. His brother is 11 years older and is 27 years old. Which equation correctly represents the situation?

  • 11x = 27
  • x + 11 = 27
  • x – 11 = 27
  • x + 11 = 38
  • x + 11 = 27

A number x is divided equally among 3 students. Each student gets 15. Which equation correctly represents the situation?

  • x + 3 = 15
  • x/3 = 15
  • 3x = 15
  • x – 3 = 15
  • x/3 = 15

Each packet has 2 stickers. There are x packets and 28 stickers altogether. Which equation correctly represents the situation?

  • 2x = 28
  • x – 2 = 28
  • x/2 = 28
  • x + 2 = 28
  • 2x = 28

A box has x marbles. After giving away 3, 10 marbles remain. Which equation correctly represents the situation?

  • x/3 = 10
  • x + 3 = 10
  • x – 3 = 10
  • 3x = 10
  • x - 3 = 10

Rina has x pencils and buys 9 more. Now she has 21 pencils. Which equation correctly represents the situation?

  • x – 9 = 21
  • 9x = 21
  • x + 9 = 30
  • x + 9 = 21
  • x + 9 = 21

A bus fare is 8 taka per student. For x students, the total fare is 88 taka. Which equation correctly represents the situation?

  • x + 8 = 88
  • x/8 = 88
  • 8x = 88
  • x – 8 = 88
  • 8x = 88

Sam’s age is x. His brother is 4 years older and is 14 years old. Which equation correctly represents the situation?

  • 4x = 14
  • x + 4 = 18
  • x + 4 = 14
  • x – 4 = 14
  • x + 4 = 14


A number x is divided equally among 5 students. Each student gets 9. Which equation correctly represents the situation?

  • x/5 = 9
  • x – 5 = 9
  • x + 5 = 9
  • 5x = 9
  • x/5 = 9

Each packet has 4 stickers. There are x packets and 32 stickers altogether. Which equation correctly represents the situation?

  • x – 4 = 32
  • x/4 = 32
  • 4x = 32
  • x + 4 = 32
  • 4x = 32

A box has x marbles. After giving away 5, 2 marbles remain. Which equation correctly represents the situation?

  • x – 5 = 2
  • 5x = 2
  • x + 5 = 2
  • x/5 = 2
  • x - 5 = 2

Rina has x pencils and buys 3 more. Now she has 9 pencils. Which equation correctly represents the situation?

  • x + 3 = 12
  • x + 3 = 9
  • x – 3 = 9
  • 3x = 9
  • x + 3 = 9