dot plot & box plot

4 girls went out for shopping they bought comic books, each one also bought a scarf that costs $5, the total amount they spent was $ 70.

How much did one comic book cost?

• 4 ( x +5 ) = 70

  x = $ 12.5

• 4x + 5 = 70

  x = $ 16.25

• 5x + 20 = 70

  x = $ 10

Find the mean :

• mean = 3

• mean = 2.7

• mean = 3.2

• greater than

• less than

Find the mean :

• mean = 27.5

• mean = 29

• mean = 2.9

An elevator goes on a speed of 20.5 meter per hour , and the maximum speed it can go is 28 meter per hour

write and solve an inequality to show how much faster this elevator can go without going over the speed limit?

• 20.5 - x ≥ 28

  x ≥ 13

• 20.5 * x < 28

  x < 56

• 20.5 + x ≤ 28

  x ≤ 7.5

Four times a number Y added to 3 is 27

write and solve the equation:

• 4Y+ 3 = 27

  Y = 10

• 4Y +3 = 27

  Y = 6

• 4Y +3 = 27

  Y = 4

The data in the box plot shows the weight of two sets of marble balls

set 1 is ............................... set 2

• heavier than

• lighter than

8 less than 2 times a number X is no more than 12

write and solve the inequality

• 8 + 2x = 12

  X = 12

• 2X + 8 ≥ 12

  X ≥ 10

• 2X - 8 ≤ 12

  X ≤ 10

The box plot shows the data of the time for two groups went shopping,

.................. takes more time than ...................

• group A takes more time than group B

• group B takes more time than group A

• Class 1

• Class 2